Can't print on my ipad2

Do you have an AirPrint enabled printer : http://support.apple.com/kb/HT4356 ? If so then what happens when you try to print to it (there is some troubleshooting at the bottom of that link). If not then does the manufacturer have their own app which supports your printer ?

Yes, I can print a picture because printer icon is right there, but when I try to print an email I don't see printer icon and I go to printer it says can't find