Social Media Marketing

I don't have Internet on my phone, but it says if I use my phone to text Facebook updates, I'll receive my friends' updates to my phone. I don't want to receive updates to my phone, I only want to be able to update my own account. How do I do that?

I only know how to put my own statuses on to twitter from my phone. How do i get updates and replies texted to my phone. Cuz I don't receive anything. I have to go online to read stuff.