The first 45 minutes of TF2 gameplay in casual gamemodes, if you don't have a more experienced friend or tutor to teach you the basics, mostly consist of dying and waiting to respawn. You might want to give it a little more time than that.It's really a game where you've got to find the class and loadout that best fits you. I'd just say 45 minutes isn't enough to appreciate what the game has to offer.