-Always shoot MORE footage than you need. A LOT of extra footage. More seems to always be better.
-Remember that you'll end up with far less footage than what you shot. If you want a 5 minute feature, expect to shoot 5+ hours (that's my going average, 1 minute of footage for 1hr of shooting).
While a 60:1 ratio may be excessive in my opinion, don't be afraid to shoot a 6:1, 10:1 or even a 15:1 footage ratio. It's better to have extra footage to work with, rather than the alternative, scratching your head in post production trying to work out how on earth you're going to make the lack of footage work is not a stress you want to have.
Always get inserts. They can help tell your story and save your "ass" in post.
Experience over time will help you know what footage you'll never use.
-Plan EVERYTHING. Make lists. Be prepared.
Learn why you do everything and when you will use it will help you make decisions during production.
It all takes time and experience.
My biggest suggestions:
Hope for the best, plan for the worst.
Don't be afraid to try something.
Don't be afraid to fail.
Always have a safety net.
Don't be afraid to make decisions, even if they could be the wrong decision.
Don't be afraid to admit a mistake and change your mind.
Learn how to effectively express want you want.
Concentrate on the result you want, not how you want it done.