It took me quite a while to figure it out by myself, and since support is sometimes useless (once they were not able to solve one of my models), this might give you good introduction, at least not to make mistakes I did.
Idea is to present recipes how to simulate nanoparticles response, tips and tricks, and other thing that I ecounter in the last 2-3 years when using COMSOL while waiting for my resists to be baked, or microfluidic chips to be bonded :).
It all stared with my post at www.physicsforums.com, where you can see what type of problems I was dealing with since the day 0.
Also, special thanks to all people that posted in that thread.
So, I will do my best to make this site working ASAP by addidng some material whenever I have some spare time.