Apologies for the late reply.
Anyway, I would suggest that you try out the tools with a test ROM so you can get the hang of it. Try mapping first. I suggest you use Advance Map 1.92 (download link), since the 1.95 version is buggy and causes your ROM to crash.
After you get the hang of mapping, try and move on to scripting, since that is how you'll be able to create new events for your game/hack/mod/whateveryouwannacallit. I suggest you use XSE (download link). There are a lot of scripting tutorials around, but I suggest you first start learning the basics (my basic scripting tutorial).
Also, remember that hacking should only be a hobby. Don't invest too much time on it. And always remember to have fun! ^^