You can login with the password that you get at the start ( this is on V3)
You can click on the connection button (5th picture across on your tamagotchi) then click on PC, which then gives you a...
Tamagotchi points are like money but in tamagotchi form when you log out of tamatown the money you've earned is given to your tamagotchi which can be spent at the "shop" icon in your tamagotchi toy :p
~depend on what version on v3 you need your tamagotchis user name. on a v4 and v4.5 you need ur user name and go to the 5th icon and go to PC there will be the log-in password. on v6 you need to...