The first twelve are covered in full below. Items 13 to 15 follow the same pattern: a recognised course, a piece of real practice, then the exam — with the awarding body and local rules checked before you pay.
1. CompTIA A+
A vendor-neutral certification in hardware, operating systems, networking basics and troubleshooting. It is the credential most often named in help desk and desktop support postings, which is why it ranks first.
How to build it: download the 220-1101 and 220-1102 exam objectives from CompTIA and work through them in order. ONLC Training Centers says learners are typically ready in three to four months at ten to fifteen hours a week, and three to six months if you are starting with no IT background (ONLC Training Centers, undated). Each exam has a maximum of 90 questions and a 90-minute limit, with a passing score of 675 on a 100-900 scale (StationX, undated). Build a home lab alongside the reading: strip and rebuild an old desktop, install two operating systems, set up a router and break it deliberately.
How to show it: list it under Certifications with the exam codes and the month you passed. In interviews, describe one fault you diagnosed end to end.
Interview answer
"While I was studying for the A+ I rebuilt a [machine] that wouldn't boot. I isolated it to [component] by swapping parts one at a time, reimaged the drive, and documented the steps so I could repeat it. That's the same process I'd use on a ticket."
2. Google IT Support Professional Certificate
A structured beginner course series on Coursera covering troubleshooting, networking, operating systems, system administration and security. It is a teaching product rather than a proctored exam, so treat it as preparation and evidence, not as a licence.
How to build it: work through the courses in sequence — the first course alone is 19 hours long (Coursera, undated) — and complete every lab rather than skipping to the quizzes. Learners dedicating 8-10 hours a week finish in roughly six months (CareerCircle, undated). Many people run it in parallel with A+ study because the syllabuses overlap.
How to show it: name the certificate and the completion date, then add a line about the labs you completed. In interviews, talk about the ticketing and customer-handling sections; support managers care as much about how you speak to a frustrated user as about the fix.
3. ServSafe Food Handler
A food safety credential for anyone handling food in a restaurant, cafeteria, grocery or catering role. Many jurisdictions require a food handler card within days of starting work.
How to build it: take the online course and sit the assessment. The course and assessment cost about $15 and align with the FDA Food Code (Open Exam Prep, undated). The test is an untimed 40-question multiple-choice paper and you need higher than 75% — 30 or more correct — to receive the certificate (Test-Guide.com, undated; Open Exam Prep, undated). Plan two or three evenings of reading on temperatures, cross-contamination and personal hygiene.
How to show it: put the certificate name and expiry date at the top of your resume, above education. Bring the card to the interview. Check with your local health department first, because some jurisdictions only accept specific accredited providers.
4. OSHA 10-hour Outreach card
The OSHA Outreach Training Program gives workers basic training on common safety and health hazards, and students receive a 10-hour or 30-hour course completion card at the end (OSHA, undated). Many construction and warehouse employers, and some public contracts, will not let you on site without one.
How to build it: book a course with an authorised Outreach trainer, in person or online, and complete the 10 hours. If you finish a 10-hour or 30-hour class and your completion card has not arrived within 90 days, contact your Outreach trainer (OSHA, undated) — chase it before it becomes a problem at onboarding.
How to show it: list the card and the date under Certifications, and specify construction or general industry, because employers ask which version you hold. Be honest in interviews that it is awareness training, not a competency licence.
5. CPR and first aid certification
A short practical certification required in childcare, fitness, lifeguarding, personal care, camps and many site-based roles, and a useful tiebreaker elsewhere.
How to build it: ask the employer or licensing body which providers they accept, then book a blended or in-person class that includes a hands-on skills check. Courses generally run part of a day to a full day. Online-only certificates are frequently rejected, so confirm before you book.
How to show it: list the awarding organisation and the expiry date. Set a calendar reminder to renew, because an expired card is worth nothing at hire and can disqualify you mid-employment.
6. Forklift / powered industrial truck operator training
Training to operate lift trucks in warehouses, distribution and construction supply. In the United States, the employer is responsible for evaluating you on the specific truck type and workplace, so a third-party wallet card is a starting point rather than a transferable licence.
How to build it: complete a classroom or online module on stability, load handling and pre-use inspection, then get practical seat time and an evaluation. Some staffing agencies and community colleges run combined sessions over a day or two.
How to show it: name the truck classes you have operated and the environments — racking height, reach truck versus counterbalance, cold store. In interviews, describe your pre-shift inspection routine step by step.
7. Certified Nursing Assistant
A regulated entry point into healthcare, covering personal care, vital signs and patient mobility in nursing homes, hospitals and home care.
How to build it: enrol in a training programme approved by your state or provincial authority, complete the classroom and supervised clinical hours, pass the written and skills competency exam, and get listed on the registry. Programmes run from several weeks to a few months depending on schedule. Requirements, hour minimums and titles differ by state and country — check your nurse aide registry or health regulator directly.
How to show it: put your registry number and status on the resume. In interviews, give a specific example of handling a resident who refused care.
8. Phlebotomy technician certification
Training in venipuncture and specimen handling for hospital labs, blood donation centres and outpatient clinics.
How to build it: complete a training programme that includes supervised live draws — classroom hours alone are rarely enough — then sit a certifying exam. Programmes typically run several weeks to a few months. A few states regulate phlebotomists directly; most leave it to employers. Confirm with your state health department before enrolling.
How to show it: state your certification, the number of supervised draws you completed, and whether you have worked with paediatric or geriatric patients. Interviewers ask about difficult veins and about labelling errors; have an answer for both.
9. Google Data Analytics Certificate
A beginner series covering spreadsheets, SQL, R and data visualisation, aimed at junior analyst, reporting and operations roles.
How to build it: complete the Coursera series — it can be finished in under six months at under 10 hours a week, and costs $49 a month on Coursera, so most learners complete it for under $300 (Coursera, undated; Hakia, undated). The certificate alone is common; what separates candidates is the capstone. Publish two projects on a public profile: one cleaning a messy public dataset, one answering a question a real organisation would ask.
How to show it: lead with the projects, not the certificate. Link them and write one line each on the question, the data and the finding.
Resume line
Google Data Analytics Certificate — capstone: analysed [public dataset] in SQL and built a dashboard showing [finding]; cleaned [n] records and documented assumptions.
10. Microsoft Office Specialist (Excel)
A proctored exam proving you can actually use Excel, which matters for administrative, finance support, scheduling and operations roles where "proficient in Excel" on a resume is treated as meaningless.
How to build it: work through the published exam objectives and practise against a real workbook — rebuild a budget or a shift roster with lookups, pivot tables and conditional formatting. A few weeks of evenings is usually enough if you already use spreadsheets.
How to show it: name the exam version, because employers notice when it is several releases old. In interviews, offer to walk through a workbook you built and explain one formula you would now write differently.
11. AWS Certified Cloud Practitioner
A foundational cloud certification covering services, billing and shared responsibility. It suits support, sales engineering and junior operations roles, and it is realistic without a technical background.
How to build it: read the official exam guide, work through a structured course, and build something small in a free-tier account — host a static site, set budget alerts, and delete everything afterwards so you understand the billing model. One to three months part time is typical.
How to show it: pair the certification with the thing you built. "Passed the exam" is weaker than "deployed [project] and explained the cost trade-offs".
12. CompTIA Security+
The security certification most often named in junior security and cleared-contractor postings. It ranks lower here only because it is not truly a from-zero credential: without networking fundamentals, most people find it hard going.
How to build it: earn A+ or equivalent networking knowledge first, then work the Security+ objectives over a few months. Budget carefully — the exam voucher costs $425 when purchased directly from CompTIA (HackerDNA, 2026), and total certification cost typically runs $600-1,500 once training materials and retake insurance are included, with premium training pushing it higher (destcert.com, undated). Vouchers are sometimes discounted through employers, academic partners or veteran programmes; ask before paying list price.
How to show it: list it with the expiry date and your continuing education status. In interviews, expect scenario questions rather than definitions.