This being the 20th page, I thought it would be a good place to put some of the excellent sites that summarize the roller technique. Going through the 200+ pages of these threads might be a bit overwhelming to the newbies.

https://board.moparts.org/ubbthreads/showflat.php?Number=2348049

http://rollyourcar.com/default.aspx

http://www.rickwrench.com/50dollarpaint.html

http://carpainting.wetpaint.com/page/Roller+Method