1. If I shut down GUI Miner do I lose what I have been mining?
2.If I mine multiple pools or cloud mine do I need to have multiple wallet addresses can I use one?
3. Also If I'm not posting in the right place to get the answers that I'm looking for , Where Do I go?
No you don't loos what you have been mining. There is no such thing as progress in mining. Since it sounds like your solo mining, you either find a block or you don't with each hash.
Also GUI Miner is a VERY OLD GPU mining software. It is not worth while to mine Bitcoin with GPU's anymore. Most pools will ban you for mining with a GPU to their pool.
You really need ASIC mining hardware to mine Bitcoin.