Adding printer, installing and Printing with канон LBP2900 in ubuntu 14.04 LTS! New to UBUNTU! please help!

I am using Ubuntu 14.04L and my printer is в Canon lbp2900b.

I have tried в number of methods I found in ubuntu help pages, форумы and community! After following some instructions I was able to install my printer. Somewhy, it still doesn't print anything.

Some one please help я by giving the right procedure to add, конфигурировал, install or whatever that i need to do to make my канон lbp 2900b to work with ubuntu 14.04!