While following a guide can get someone set up quickly, the problem is that they may not have the background to deal with issues/breakage down the road. Maybe it's a botched update, a strange error, or so forth. The security side is also another can of worms and I recommend that people do some reading into this topic before running a public web service.

I'm not trying to dissuade you from writing this - such guides are always appreciated by the community. It's just that I've seen a lot of inexperienced people try setting these things up with a guide and getting bit in the back a couple months later.