To enable the nadepractice config do the following:
- Copy
nadeprad.cfg
intoC:\Program Files (x86)\Steam\steamapps\common\Counter-Strike Global Offensive\csgo\cfg
- Create an offline game with bots
- In console type
exec nadeprad
Learn all the smokes and have fun. The "e" key toggles noclip, and the "l" key gives you all the nades. You can change those in the config.