Moving in to Belgium: Tips and Hints

Hello there!

I'm a brazilian guy (24M) that just received a proposal to start working in Belgium, and O'll be probably moving in to Leuven in october/november.

I would like ask you guys for help regarding the best websites to search for an apartment/house to rent, if there is any website where I can search the average cost of life in Leuven, and what kind of difficulties I may face regarding language since I only know english. I intend to learn Flemish Dutch, but I'll probably arrive in Belgium without being able to speak it.

Also, if there is any foreigner willing to share your experiencies living in Leuven or nearby cities, I'd gladly appreciate it!