Subject says pretty much all, BUT; after copying whole project I should have linked parts, assemblies and most importent excel files. I need every single part to be copied, assemblies to stay the way they were, and full functional table in seperate and new project.Some books say i should use Autodesk Vault, but i don't know how to create the Vault, and log in.

Your best bet here, is to use the Pack and Go option under Save As.  This will round up all of your files connected to your assembly and save them into a folder you specify.