My parents are quite religious as well and they seem to have tried to brainwash me in the past when I was young (im 27) now but they only managed to make go to church in like christmas and easter.. and this pretty much as a custom. Also they were not sociable so I'd struggle to make lots of friends when I was younger.
With time I started going out a long and hanging out with people who live different lifestyles than mine. What you have to do is when you hang out with people don't mention stuff like religion etc, and certainly don't get into any debate of that sort, people sort of freak out with such talks. Keep in mind that when people go out, they just want to have fun, so try to remove your barriers and just enjoy yourself.
My advice is forget all about whats right in the eyes of god or whatever, and do what pleases YOU without hurting others' feelings. Your freedom ends where the freedom of another person begins, so the foundamentals that you have been taught exist and will help you AFTER you get out there and get some experience under your belt.
You will eventually crash and burn a few times, perhaps even get hurt by people of lower moral standards than you but don't worry about it, in a few months time with the proper training you'll be able to see the world from another viewpoint.
What you are about to read in books like Mystery Method or various ebooks will most probably make you think "I'll never do that". But trust me, if you put a little effort you'll do just fine.
When I was 18 my parents bought me a mobile phone to be able to find me and make me go home, they were overprotecting. Then I started expanding my social cycle and when I was 20 I knew most people in the best clubs of Athens/Greece (and whoever has been in athens knows about the wild nightlife) and ALL it took was going out frequently, being friendly with everybody but not act needy. Show some confidence and that you know how to have fun and you'll take it from there..
By the way, having fun does not mean you'll end up drunk each time you go out. Take it easy with the alcohol, and just try to have positive energy, which means even if you're worried about exams or whatever else, when you go out, the people you are with do NOT care and do NOT wanna know. So when you're out with them, try to focus on just the positives of your life!
