[HeftiSchlumpf]

Is there a list or documentation about all possible hooks and what they mean / when they are fired?

[BAILOPAN]

Not really. A hook, in AlliedModders parlance, is pretty much intercepting any function call in the Source engine. When they fire, what they do, which ones are easy to grab - are mostly undefined and found through trial and error.

(That's not to discourage, but you might have to do some hunting or experimentation if no one can answer a specific question.)