Mods and Gamestop App

[sydfynch]

I'm new to SH3 and was reading up on the patches and mods available for the game. I'm not a developer of any kind and was wondering if someone could explain the process of adding those patches and mods to my current game.

I purchased SH3 through Gamestop and downloaded through the Gamestop App, which I assume keeps track of the licensing, but will that get in the way of enhancing my version of the game with mods or patches?

Any advice from the old salts here is much appreciated. Thanks.
Syd