The maintenance regs, drawn out so you can see them.

Free study site for the FAA Light-Sport Repairman course and the A&P knowledge tests — every rule cited to 14 CFR or FAA guidance.

LearnGuides to Parts 43, 65, 91 & 21, shop practice, cheat sheets, study plan and test facts. VisualPrivileges matrix, inspections, records, major vs minor, MOSAIC, certificates. QuizMultiple choice with explanations and citations; timed mocks. CardsRegulations, light-sport/MOSAIC and shop practice decks.

Test facts, study plan and your quiz history are on the Learn page.