Disneyland tips?

[Broccolisprout]

I will be going to Disneyland soon, we will have 3 days in the parks, and we have park-hoppers. Any tips? We've been to Disneyland couple times, one time a couple years ago. Any advice for seeing World of Color, any fastpass tips, best times to try a ride? Also, we will have 2 days we are not in the parks, any advice for possible bad/good times to be in Downtown Disney? Any times when the parks empty out a little? Would like to see as much as possible in the amount of time we have there, and do it in a less tiring manner than randomly running about.

Thanks!