how to print on hp 3055

There's a list of printers that support AirPrint, the native mechanism for printing from iOS, here:

http://support.apple.com/kb/HT4356

Since the 3055 does not appear to support AirPrint, you'll have to use other methods. HP has an app that enables printing to some of their other wireless printers. There are also other apps that provide printing; search the iTunes Store and you should find some, or someone else may offer suggestions. You can also route the printing through your computer. If you have a Mac, Printopia might be worth a look:

http://www.ecamm.com/mac/printopia/

If you have a Windows system, search the web for something like "airprint Windows hack" and you'll find instructions on enabling printing.

Another option for both Windows and Mac systems is Fingerprint

You could also consider an AirPrint-capable print server. Lantronix makes a couple of models, including one that supports a USB printer:

http://www.lantronix.com/it-management/xprintserver/xprintserver-t2.html

Regards.

varjak paw is right - his list of airprint enabled printers is really useful

regarding pc and mac apps that you let you print from the iphone have a look at the apps by eurosmartz

i have their print n share and printcentral pro apps which allow me to print to my hp laserjet with no hassles