>>726385
Orthodox here.
Dude, just go. A good church will welcome you with open arms and will be more than happy to answer your questions, show you the ropes, etc. During a service, either follow along the best you can, or only do what feels comfortable. If you just want to go in, sit and observe, that's perfectly fine too. Ultimately, the more you go, the more you get acclimated to things and before you know it, you're part of the crew.
If you happen to run across a cold or snobbish church, brush the dirt off your shoulders and move on.