Start by placing package files in your Mods folder and enabling mods and script mods in-game settings.
Use tools like The Sims 4 Mod Manager to organize and troubleshoot your library.
Always check compatibility after patches since updates often break older mods.
Creators like LittleMsSam and KawaiiStacie regularly update popular mods for stability.
Back up your saves before testing new or complex mods.