c4nati

Hey all, just a few quick questions for a noob as I couldn't find a definitive answer on my own from searching. If I don't want to run with Mods after I start modding and want to play normal can I just launch Skyrim like normal after I've modded or will I always have to use Nexus once I start modding? Does it still save in the same place in my documents for the game? Thanks!