Demetrios, since this is your first receiver, just relax and take a deep breath--setting up a home theater can be seemingly complicated the first time.
Even though the Denon manuals can be difficult to understand, take an opportunity to flip through it, maybe paying particular attention to the hook up guides. That's probably going to be the hardest part--figuring out what plugs in where.
Believe me, the 3808 is a pretty slick receiver, don't give up on it. Many board members here have it and can help you out with whatever problem or question you may have.
Patience!! You'll get through this.