Gary's Mod Instructions:


1. Add this Workshop Collection (Subscribe to all)


2. Download CS:Source and HL2:Episode 1 addon packs.


3. Move addon pack folders (css-content-gmodcontent & hl2ep1-content-gmodcontent) into:
C:\Program Files (x86)\Steam\steamapps\common\GarrysMod\garrysmod\addons