hi to all newbies!
perhaps this goes without saying -- since apparently everyone except me had read this book (until yesterday!) -- but i HIGHLY recommend Toni Weschler's
Taking Charge of Your Fertility. i've read a bunch of material on tracking your cycles, but nothing was as comprehensive, informative, and readable as this book. i read through the whole thing yesterday and learned a pile of new stuff. it's so valuable for learning how to interpret your cycles, and what that information says about your body. it could save you a lot of heartache in the future, as it troubleshoots so many problems.
check it out at
http://www.ovusoft.com/library/tonimessage.asp.
vital resource 
