When to Use from or for?

We use for + a time period: We have lived in this house for thirty years. I've been waiting here for three hours. We use since and from to express duration.

What is difference between for and from?

As prepositions the difference between for and from

is that for is towards while from is with the source or provenance of or at.

What is the From used for?

From is generally used to express that something originates from something else, that something comes from somewhere, or some person. For example: Jack comes from Portland.