I have been looking into repair manuals and found a website that you can download a manual for like 20 bucks has anyone done this and how good are they, is it worth doin it this way or going to the dealer and buying one, supposedly these are the same ones the dealers use

 

Yeah, most of there manuals are PRF files, that are scans of the genuine dealer copies. You may want to check ebay first. Sometimes you can find them cheaper there.