1 - Don't click your own ads. Ever. For any reason.
2 - Don't encourage others to click on your ads.
3 - Don't SPAM Google.
4 - Don't create trash pages for the sole purpose of generating AdSense income. Make earning money a secondary objective only after creating content that is useful apart from AdSense.
5 - Don't just create pages that target high dollar keywords only. Balance out the 20 pages that have the potential to earn 2 figures/click with 50 that will likely only earn $.03/click.
4 - Pay special attention to what Jenstar and the other experienced members here have to say, but read the Terms of Service, and FAQs on a regular basis yourself. Good advice is always better used if it is backed up by your own solid basic understanding of the topic.
5 - Google is not your partner and thinking of them as such is probably unwise. Google is a business and they will always put their interests ahead of yours (and rightly so).
6 - Never forget that someday you just might receive "the dreaded email" even if you follow all the rules to the letter. Be prepared by creating multiple sources of income.
7 - Always wish for the ultimate success of AdSense, even if you do end up getting booted from the program. Success inspires competition and competition provides a place to go when you get kicked out.
That's what I have. What have I missed? Where have I missed the mark?