Misleading title, but welcome to TamaTalk! I'd start here https://www.tamatalk.com/IB/index.php?showforum=81 and then just browse around the forums. Let us know in any of the Help sections if you have specific questions. Hope you enjoy your stay!
If you're looking for cheats or codes we have two forums that you need to browse:
Tips & Tricks - members post tips or tricks they have found (and tested)
Tamagotchi Codes - any codes found that you can enter to get gifts, etc. on your tama
both forums are listed on the main Home (Index) page as well as Help for New Tamagotchi Owners which is where you can post questions if you can't find the info you're looking for in the other two forums