I found Miculek's info very helpful.
All tips:
http://www.shootingusa.com/PRO_TIPS/...y_miculek.html
Grip:
http://www.shootingusa.com/PRO_TIPS/.../miculek2.html
I started with wheelguns way back when and used a variation of the JM grip that has been noted.
About seven years ago I started using the thumbs forward grip on my pistols.
I switch back and forth between shooting my Glcoks and my S&W 642s with zero issues on which grip for what gun.
Scott
Only Hits Count - The Faster the Hit the more it Counts!!!!!!; DELIVER THE SHOT!
Stephen Hillier - "An amateur practices until he can do it right, a professional practices until he can't do it wrong."