I used fertility friend as well when I was charting. However, it's a very good idea to get TCOYF and read it...it's a very helpful reference guide! It will teach you everything you need to know about your body, that's for sure!
I got mine from Amazon.com for pretty cheap, I think it was only a couple of dollars. I would check there.
Anywho,

and hope you get your BFP soon!!!