Go forth and do the exam . Useful link included

Hey there!

This is a extra post just to give you the power of the best practice ever. The actual online practice exam from Cambridge's official site.

First take a look at their informative tutorial on how to complete the exam which contains some useful tips and hacks.

Now to the exam. Here you can practice the Listening, Reading and Use of English and Writing computer based exams.
http://www.cambridgeenglish.org/exams-and-tests/first/preparation/

Good Luck ;)