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I used to take my small frame S&W apart without instructions.
You can google things on a thing called "The Interweb", so they say:
http://ca.youtube.com/watch?v=5YWDK3OS7IA
There's an exploded drawing on Gunparts. The rebound slide assembly takes a special tool to get out and back in without losing the wee spring. Brownell's sells 'em(S&W rebound slide spring tool) at $19.97US each.
Not hard to make if you have a lathe. The diameter of the rod part is a bit under 3/16", as I recall. A hacksaw will cut the slot with no fuss. http://www.brownells.com/aspx/ns/store/productdetail.aspx?p=774