If you are looking for the official game or reliable community resources, here are the safest and most "useful" places to start:
: While ACC is less mod-heavy than the original Assetto Corsa , RaceDepartment is the standard for high-quality custom liveries and tools. Assetto-Corsa-Competizione.rar
: Websites like Traxion.gg or Coach Dave Academy offer excellent blog posts on car setups, track guides, and beginner tips that are far more useful than a .rar file. If you are looking for the official game