u cant
you cant have a minecraft pocket edition username
you cant
In the minecraft pocket edition you cant get seed because in the computer version you get seeds from tall grass and there is no tall grass in the minecraft pocket edition
It is currently impossible to load a Texture Pack on Minecraft Pocket Edition unless if you Jailbreak your device.
you cant
Well most likely your ipod touch/ iphone is old software. The only way to download it is to get the latest product.
If you have an Apple Mobile Device, you simply search "Minecraft PE" in the App store and tap "purchase". You will then have to type in your Apple ID password and then the app will download.
for now you cant gust slabs
You cant
Unfortunately, no, you cant. Only on a PC or a Mac
You will need the 0.3.3 update.