So, I've finally decided I want to mod the game. 1st question I have is, when I create a new plugin should I load only Skyrim.esm or both Skyrim.esm and Update.esm.

Another question is, how stable the CK is, and how well do plugins handle version changes? I'm wishing to work on a landmass mod, so far I don't need to make anything that's not related to simple world building, but can version change mess up my mod or am I safe to start working on it now?