The thing about being a noob is that you don't know what you don't know. We've all been there.
If your gut tells you, "I'm not 100% sure what I'm doing here" - DON'T do it!
As a basic foundation for ratting, you should understand virtualization, how to properly set up a VPN, understand concepts such as DDNS, port forwarding, crypting and FUD and then you will only be ready to practice (white hat of course) within the scope of your own virtual lab. All of this takes a good bit of TIME to practice. If you wanna dive in and just do it, just put a pair of cold handcuffs on for a while and think hard about it.
Like @G3THO3 said above, you can get in a lot of trouble and it's not worth the risk. Like all the others said, be careful!