i have to put a shut off valve in existing pipe
The most important thing to do is make sure the pipe is cleaned. Take some sand paper and sand the outside of the pipes until they are shiny. Also do the inside of the valve. Make sure there isn't any residual water in your pipes by the joint as it will mess up the solder. Put the flux on the outside of the pipes and inside the valve where they will meet and then put them together. Heat the joints with your torch. When it is the right temperature the solder should melt when you touch it to the pipe and run all the way around the joint. The pipe doesn't have to be red hot but to cold will make blobs. It takes practice so don't give up.
you need to go and take the motorcycle safety foundation class - basic rider's course. this class will help you tremendously!
It's just one of those things you have to do on your own if none of your friends ride. But I will tell you this there are 2 kinds of riders Ones that have laid one down and ones that will. It will happen trust me. I don't know of any rider that's been riding for a long time that hasn't laid at least one down. Good Luck
and the simple answer is buy a compression valve. Cut the pipe where you want it and use 2 wrenches to tighten the new valve on. If you're already asking how to solder, you're next question is going to end up being how do I solder a pipe with water in it?
