Qualifications
Straight answers about trade credentials: who issues what, which requirements are verified fact and which vary by state, and how the exams actually work. We are a study resource, not a card mill, and every requirement cites its issuing authority.
All trades
Learning paths
Exam prep
Journeyman Electrician Exam Prep
Walk into the journeyman exam with every tested subject covered, in the order that builds
73 steps →
ElectricalExam prep
Master Electrician Exam Prep
Everything the master exam adds on top of your journeyman knowledge
12 steps →
HVAC/RExam prep
EPA 608: All Four Exams
Core plus all three types in one prepared sitting, straight to Universal
20 steps →
PlumbingExam prep
Journeyman Plumber Exam Prep
The applied code knowledge the journeyman plumbing exam tests, system by system
31 steps →
General ContractingExam prep
Contractor License, Start to Finish
From understanding licensing to passing the business and law exam and assembling the package
21 steps →
WeldingExam prep
Your First Welding Cert
Walk into a welder qualification test knowing the processes, the science, and the paperwork it is scored against
24 steps →
SolarExam prep
NABCEP PV Associate Prep
Walk into the PV Associate exam with the fundamentals, the code logic, and the exam mechanics all covered
21 steps →
Low Voltage and TelecomExam prep
Fire Alarm Technician, NICET Track
From first panel to NICET Level II eligibility: the systems, the code, and the certification mechanics
11 steps →
Fire ProtectionExam prep
Sprinkler Fitter to NICET
The sprinkler systems, the ITM discipline, and the NICET water-based tracks, in working order
21 steps →
Water and WastewaterExam prep
Water Operator, Certified
From treatment fundamentals to your state operator certificate: the processes, the math, and the exam system
23 steps →
Diesel MechanicsExam prep
ASE T-Series Prep
The systems the T-tests cover and the certification mechanics, from first test to Master status
20 steps →
Heavy EquipmentExam prep
CCO Crane Operator Prep
Operate under OSHA 1926.1427 with the CCO card earned and the load chart mastered
21 steps →
Masonry and ConcreteExam prep
Concrete Work to ACI Certification
Place it, finish it, survive the dust, and certify the testing that proves it
22 steps →
Industrial MaintenanceExam prep
Maintenance Tech to CMRP
The mechanical, fluid power and controls knowledge a plant runs on, then the reliability credential
30 steps →
Sheet MetalExam prep
Sheet Metal to TAB Certified
Fabrication and duct work through to testing, adjusting and balancing certification
23 steps →
Start here
Electrical · Journeyman
The Journeyman Electrician License
Welding · Certified Welder
Welder Qualification: How It Actually Works
Welding has no journeyman licence, it has qualification: witnessed proof that you can make a sound weld with one process, on one material, in one position, to one code.
Plumbing · Journeyman
The Journeyman Plumber License
The journeyman plumber licence is the first exam gate in the trade and the point where you work in your own right rather than under someone else's supervision.
Browse by trade or see everything on one page →
Electrical
From your first circuit to your contractor license: electrical theory, calculations, code navigation and the exams, taught properly and in order.
10 lessons →
HVAC/R
How heating and cooling actually work: the refrigeration cycle, airflow, electrical controls, and the certifications the work requires.
10 lessons →
Plumbing
Water supply, drainage, venting, gas and the codes that govern them — plus the journeyman and master path, state by state.
7 lessons →
Welding
Processes, metallurgy, symbols and the qualification system — what each test proves, and which ticket your branch of the trade actually needs.
4 lessons →
Ironworking
Structural and reinforcing work, rigging, and the connections that hold buildings up.
2 lessons →
Boilermaking
Pressure vessels, tube work and code repairs under ASME rules.
2 lessons →
Sheet Metal
Layout, fabrication and duct systems, through to testing and balancing certification.
4 lessons →
Roofing
Steep and low-slope systems, leak diagnosis, storm work and the contractor path.
5 lessons →
Masonry and Concrete
Brick, block and concrete done right — including the ACI certifications public work demands.
4 lessons →
Heavy Equipment
Operating the iron, reading grade, and the crane certification federal rules require.
4 lessons →
Linework
Power delivery from substation to meter, the climbing and live-line disciplines, and the apprenticeship that gates it all.
3 lessons →
Solar
PV systems from racking to interconnection, and the NABCEP path that certifies you to design and install them.
7 lessons →
Low Voltage and Telecom
Structured cabling, fire alarm and security systems, and the NICET and BICSI credentials that anchor the field.
8 lessons →
Elevator
Traction and hydraulic systems, the NEIEP apprenticeship, and the licenses and QEI path above it.
3 lessons →
Industrial Maintenance
Bearings, hydraulics, controls and the reliability skills that keep plants running.
3 lessons →
Diesel Mechanics
Engines, brakes, electrical systems and the ASE certifications that price your labor.
6 lessons →
Fire Protection
Sprinkler systems, NFPA 13 and 25, and the NICET levels state law leans on.
5 lessons →
Water and Wastewater
Treatment and distribution operations, and the state certification ladder the job legally requires.
7 lessons →
Carpentry
Framing, layout, forms and finish — the measured trade, from first cut to running your own jobs.
2 lessons →
Not a trade, but every trade needs it
Safety is a discipline that runs across all of them (and a career in its own right); contracting is the business layer above whichever trade you came up in.
General Contracting
Licensing, estimating, contracts, cash flow and getting paid: the business side of construction nobody apprentices you for.
8 lessons →
Construction Safety
The hazards that hurt people, the systems that stop them, and the credentials — from the OSHA cards to CHST and CSP — done honestly.
6 lessons →