I would never cheat to that extent as to give myself everything, but I guess the best gaming experience varies from person to person.
Anyway, to change around in your save file, go into your "Pokemon" folder & then go to Save. After that, get into your savefile's name & there you get a couple of noteblocks with stuff written in them. What you want to get into is "Player" & you get a list of different information.
There you can find "Money", where you can practically write in however much you want. I think you can play around there for a bit and find the rest out for yourself.
As for how you give yourself pokemon and such, You can find videos on this website about it.