The best resource I have found is without a doubt the Microsoft-public-sqlserver-reportingsrvc group on Google, but it can take some time searching posts to find someone that’s solved your issue, you generally find people with the same issue as you (rather than a solution), so when I have found a solution I’ve made a note of it along with anything else I find that I think could be of value.

Anyway I set up a (rather simple) website to share some of the tips, tricks and workarounds that I've picked up along the way.

I’ll be adding to this as time goes on, my goal is to get to at least 100 tips