My keyboard guide for SlickEdit assumes you already know Vim, so it primarily covers SlickEdit-specific functionality, with only a section dedicated to Vim itself.
I made another one-page reference, but this time focusing on Vim. Vim is a great text editor: it's powerful, ubiquitous, light-weight, and free. I think learning it is a good investment, and SlickEdit with Vim emulation a great working environment.
I hope you find the Vim reference useful: http://www.qnan.org/~pmw/vim