Welcome to the board! I hope your stay is short and sweet!
Just some things that I found helpful when I started this journey:
Read the newbie link. You can find it above the "community rules".
Watch "The Great Sperm Race" on youtube. It's about an hour long but packed with great information.
Sign up for fertility friend and do the tutorials. You can click on any chart you see in a siggy and it will take you there.
Read Taking Charge of Your Fertility by Toni Weschler. I learned so much about my body and what the heck it was up to. I recommend it to all my friends.
Now take this advice with a grain of salt but it definitely helped me.

Good luck!