Hey guys, I thought I'd add my two cents into the whole textbook thing. I've been studying for a long while now and I think I've finally found what works best for me at least.

Check out "Using Russian: A Guide to Contemporary Usage" by Dereck Offord.
Its not so much a text book in the sense that it has lesson plans and exercises, but its a great all in one resource material.

It has a unanimous 5/5 rating on amazon and its not too pricey (30$).

I got it a while ago, and its amazing how concise and useful it is.

It has sections on
- register of speech
- cases and gender tables for nouns and adjectives of course
- a slang section
- a preposition database
- a collection of words difficult to render from Russian to English and vice versa
- Russian homophones and near homophones (which are pretty much homophones to us)
- the general meaning of prefixes of the verbs
- etiquette
- vulgarisms
- inflection
and about 20 others sections I don't feel like numbering

If you had a good book full of lessons, a great dictionary (I use an electronic one I got in Russia called "alphalex"), and this grammar reference I think you'd be all set.

I mistakenly bought a verb book as well as an idiom dictionary, but I'd recommend just using the websight www.multitran.ru for idioms, and getting alphalex for verb conjugations (it has a neat feature where you can just right click any word and it will pop up with a definition, a few examples, a table of conjugations with accent indicated, theres even a little wizard guy who will pronounce the word for you if you tell him too.)

You can get alphalex here for 5$
http://www.myzips.com/software/AlfaLex.phtml
believe me its definitely worth it.