I did the virtuallab of FIM. I used MIIS in the office. In MIIS we set attribute flow in Synchronization service but, in the lab I set it in FIM portal. I do not understand how it works. Is there any good study material for FIM?

Start here and follow the links ... then I suggest you find a FIM intro course (here is a resource that delivers FIM training in the APAC region)Bob Bradley (FIMBob @ http://thefimteam.com/) ... now using Event Broker 3.0 @ http://www.fimeventbroker.com/ for just-in-time delivery of FIM 2010 policy via the sync engine