Yeah, YouTube has them. Here is the original Ruger manual http://stevespages.com/pdf/ruger_redhawk.pdf

Sights and piles of accessories:

http://www.brownells.com/search/index.htm?k=Ruger+Redhawk&ksubmit=y&f_a=13

I'd recommend some sights, but sights are often personal preference. I happen to like a square target sighted rear and Patridge front, all black.

Some like an express/shotgun bead, which is available, or colored inserts, white outline, white line, etc...