first time using mod in a game(crysis) help plzz

alright so iv never used mods before ever, and i have just downloaded crysis, bu i wanna download a rreally pretty mod for crysis. anyways, which mod makes it look the best, also where can i download it, and finally(and the most important) how do i even put the mod into the game? lol im an extreme noob at this so how does this all work, how do input the mod into the game and if someone could explain it thoroughly and very clearly i would be forever graceful.

Danke! gute nacht!

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