TOPIC: Could you please tell me what is the different?

Could you please tell me what is different between the following sentences?
1)The "be used to (doing) something pattern is FOR talking about something once you're already familiar woth it.
2)THe "be used to (doing) something pattern is TO talk about something once you're already familiar with it.
Guest

There is no real different in the meaning of these two sentences, but USUALLY we use
-the infinitive ("to talk") form when we're talking about the PURPOSE of something,e.g, "I came here to study."(Why?To study=purpose of coming here)
-the For+ing form when we're talking about the FUNCTION of something ,e.g. "A computer is for saving and anazlying data."(What's it for?Saving and analyzing data the= computer's function)