I would get a computer with Cadance. I rarely use the other stuff other then general knowledge, Cadance keeps me going! It will help you to Shift. (up/down)
As far as your saddle, it is a long and tedious process. So many things are involved.
I made several MARKS on the seat post and the saddle frame too. Things to keep in mind are:
Height
Forward/Back
Tilt (nose up/down)
It takes a while to dial it all in, but it is WELL WORTH IT, once you get it!
Good Luck!