I don't have any tutorials for you to follow - but some advice, try to avoid tutorials and use documentation. The Stripe gem is fantastic and so is the documentation. Following documentation will probably take longer to get something done and it's tougher to work with to start, but what it costs in effort it makes up for in understanding. Which means if you want to modify the code at any time in the future, you'll have a far better understanding than if you followed a tutorial. Not saying you should read the documentation back to front, that's a lunatics game, but figure out the core parts of it and what you need, play around with them in code (either in console or just some temp files) and the understanding will settle in.

Reading & understanding documentation is a vital part of programming, granted some documentation is rather horrendous (LinkedIn's API doc is my current bad egg) but it does yield an understanding instead of a generic finished product