I was wondering if it is very difficult to install a rest. I am getting a whisker biscuit but I wanted to do it myself. I have never installed my own.

No. They are incredibly easy to install, but unless you have the proper tools to set centershot, you're ....peeing in the wind, so to say.

Only tool I use is my eyeball, haven't had any trouble yet. Sometimes a long stabilizer comes in handy though.

I don't use any special tools when setting up a bow. I just eyeball everything and tune from there. Sometimes I eyeball them so well they don't even need to be messed with for target shooting.

Paul

It is really easy to eyeball it. Then just paper tune it like paul said.

A few other pointers. On some bows the arrow needs to be square with the string, 90 degree angle, as well as the arrow should run parallel with the two holes that the rest is mounted to on the riser andon some bowsto get a good paper tear you can use a 1/16"-1/8" nock high adjustment.Check to see that the biscuit is also square and not tilted forward or backward, check your center shot to see your vanes aren't touching your cables and you shouldbe pretty set to go.
Good luck!