i traded a revo 3.3 rc truck for a Easy Fly 40 Trainer on craigslist.
never flown and i was the first to put fuel in it.
as i was flipping the plane around and looking into the body of the plane, i noticed that the fuel tank would slide towards the the tail when i had the plane's tail angled towards the ground and it would slide towards the nose when the nose was angled towards the ground.

is this suppose to happen or should i be looking for a missing screw or something to secure the fuel tank?

you need to secure the tank. usually the manufacturers will leave it up to you to find a way to do so. You can pack the area full of foam, use some velcro or strap, or even rubber bands though rubber goes bad after a year or so and needs to be replaced. I would probably just stuff it full of foam so the tank is secure since it's just a trainer.

o ok thanks a bunch man

Um... You ARE going to get help learning to fly, aren't you?

Airplanes are not as easy as cars!

yes joining a club next summer
and getting a rc flight simulator for pc to get and idea for what im in for