Where To Start
I am still VERY MUCH a beginner myself, and practically everything here is an excellent suggestion.
The single most important move is the Classic Palm, so work on that constantly until you can palm.
My local magic shop recommended Bobo's "Modern Coin Magic", Ammar's "Introduction To Coins", and David Roth's *excellent* 3 DVD "Beginner's To Expert Coin Magic" Set.
Tarbell Volume I has a pretty through list of basic technique and several chapters on coin work as well, some of which don't appear elsewhere.
I'm now reading David Roth's book "Expert Coin Magic", and learning a great deal from THAT, too.
What I've found is that I keep returning over and over to the different sources, picking up subtleties I originally missed out on. I first read Bobo cover to cover, passing right over sleeving, and didn't understand much but started practicing the "basics" in the first three sections.
Roth and Ammar DVD's finally showed me that I WAS learning something, and how I could apply those to useful effects, so now I can do some very basic vanishes and such. Coin thru table, copper and silver switch, Miliken's Transposition, Metamorphosis, and a few "Winged Silver"/Coins Across-type pieces that are finally starting to come together.
I'm still working those basics in the mirror, reading Roth's book which ALSO contains much I've not seen elsewhere, and trying to learn tricks and routines. Each source is VERY valuable in their own way, and each time I return to them, I have a better understanding of the material. I suspect I'll be going through just those three books and DVD's for a long time to really develop competence and facility with the material.
When I could afford it, I picked up a nice Johnson's Half-dollar shell, because many tricks require one of them as well, tho' most effects can be accomplished multiple ways with or without the shell.
Incidentally, I found T. Nelson Downs "Modern Coin Magic" to be practically useless to me.
My best recommendation is start with Bobo's book and one of the DVD's to help make sense of what you're reading.
Best of luck, and I ,too, would MUCH appreciate hearing ANY advice from others regarding what they can recommend working on or using for source material to build technique.