TTC: Where to begin??

Athena • Pregnant with baby #2 (#1 = angel), 31yo, DH 34
I just finished my period 2 days ago. I have been TTC #1 for at least 12-16 months & after doing the "baby dance" every day during the high fertility phase (according to Glow) and it STILL not happening..., I want to try the opk  I don't really understand any of this. What are your TOP tips? I take a Folic Acid ever day...