My answer is:
How To Suck At Atheism
1. Assume all believers are judgmental.
2. Assume Christianity has held back scientific advancement, in spite of visionaries like Isaac Newton, Galileo, and even Georges Lemaitre.
3. Assume teaching your child the family's faith tradition is tantamount to forcing dogma on them.
4. Adopt a cartoonish unrealistic worldview of Christians.
5. Assume religious believers fear sex.
6. Pretend that anybody who mentions God is "forcing their religion down your throat".
7. Lump all religions in one basket and ignore the great differences between them.
8. Convince yourself that you're nothing more than a purposeless "bag of meat", a completely insignificant accident, despite your internal wiring that tells you otherwise.
9. Focus 99% of your hatred on Christianity but use the terms "religion" or "theism" to make it look like you're being more fair.
10. Spend hours on the internet trying to badger people into believing the same crapola you've been indoctrinated with.