If I were in your place I would start with this one
http://www.caswellplating.com/powder/powder_coat.htm
As far as a blast cabinet is concerned, I started with a benchtop setup but quickly learned my lesson and only used it twice before I got rid of it. In the course of building up my shop I learned that you really do get what you pay for. My suggestion would be to avoid blowing your budget on a complete but inadequate setup. Get a decent compressor, the caswell gun, a used kitchen oven, and some high heat masking tape. Use chemical strippers and sand by hand for your first few parts. You should be able to get everything you need right here, including unrivaled tech support. As far as an oven is concerned you can pickup ovens at scratch and dent stores or from the news paper. My first oven which I still use for dry film lube curing came from Lowes and was a floor model which I picked up for $75. If you feel that you really need a blaster you'd be better off building your own. A decent blaster with a dust vac is in my estimation far too expensive for just starting out and not really knowing if you'll continue with powder coating. Besides it's not completely necessary if you don't mind doing a little bit of work.
When you buy a compressor you really need to think 3 or 4 years ahead of where you are now. I have a 65 gal single stage 3 cyl putting out around 18 cfm at 100psi. This is ok for the short term for my shop but will most likely be replaced within the next year. The best way to choose a compressor is to figure out the requirements of your biggest air user, and add a 25% margin of error. So in your case you're thinking of buying a blast cabinet. A small cabinet will require somewhere around 5-7 cfm as a minimum. If you go with the minimum you'll run out of air and take frequent brakes. You'll also need some sort of air dryer to keep moisture out of your blaster. So with a min requirement of say 7 cfm you're looking at most likely a 10cfm compressor. I say 10 because small compressors never put out their listed cfm. That is about a $400-$500 compressor unless you find a used one. You're gonna need enough power for it as well 220v 20A. This can start to get expensive after a while. All hope is not lost, but you really need to look at some of the creative ways people have gotten around breaking the bank on equipment. There are many posts on how to build your blast cabinet right in this very forum. I would stay away from the benchtop blasters.