LG Tritan AX-840 / UX-840

I just got the Tritan and I love it. The only thing that bothers me is I am paying the full date plan price for half what my hubby's Blackberry can do. I cannot figure out how to get to Facebook, even though there is an app on the main screen for it. Keeps telling me go online and review my account. I have tried sending facebook mobile txt msg to my phone and I can't figure it out. Also, I cannot click an any links or attachments in emails. Is this just becuase of the OS on this phone or what? Please help. I really want the touch screen, big fingers, and no good IPhone coverage in our area. Thanks.