In this GTA 5 mods beginner guide for 2026, I’m showing you my full step-by-step method to install mods on PC without breaking your game. I start from the basics—downloading the right files and setting up the required stuff first (like Microsoft Visual C++ and .NET), because most “GTA 5 not launching / crashing after mods” problems happen when people skip these. After that, I move into the main tools: OpenIV for installing files the clean way, Script Hook V for scripts, and ASI support so your mod folders actually load properly. Then I walk you through installing popular mods and trainers (like Menyoo 2.0), plus the important stability tools I personally recommend if you’re adding a lot of mods: HeapAdjuster, Packfile Limit Adjuster, and a proper gameconfig. I also cover the “important step” most beginners miss (the one that saves you from random crashes), and then I test everything in-game so you can confirm your setup is working. And yes—mods are for Story Mode only, not GTA Online, so keep it safe and separate.