Ok, I can help a little.
I wouldn't get into total detailed disassembly unless I really needed to. Broken or damaged parts do need replacement,, but for general cleaning,, field strip & use a good brake or carb spray cleaner, (after you've removed the grips.) By just 'rinseing" out the action area you will be just fine. Just remember to add a light oil to the area after doing so.
As for the bolt & firing pin.
Once it's removed,, you can see a cross pin for the firing pin on the side of the bolt. Using care to push it out,, THERE IS A SPRING UNDER IT, you can push out the cross pin, and gently remove the firing pin & spring. Watch how it comes apart,, and you can reassemble it easily.
Another option;
JB Woods books; "Gun Digest of Disassembly & Reassembly," are an EXCELLENT bunch of books to use. You would need book #1 "Automatic Pistols" for the Ruger I believe. I'll check later.
I use my set often.