The heli may or may not hover right out of the box. If you have no prior experience with helis, your chance of lifting off into a stable hover and keeping it there is about the same as me winning the mega millions this week.

If you can move the left stick all the way up and the helicopter will not even lift off the ground, then you have some sort of problem (be it mechanical or electrical). Check the falcon forum, see if you can't find some insight over there.

BTW, having "read a lot of posts" will give you no actual flight experience and should not make you able to hover. But, it will help you to know about your machine and the principles of helicopter flight, which will be necessary if you want to try flying it.