What is the difference between reading glasses and prescription glasses?

Are reading glasses for you?

What do the numbers mean and what is the difference between the lens powers?

What are the lowest and highest strengths you offer?

How do you know your reading glasses strength?

What styles do you have available?

Do you need multiple pairs?

Can you wear reading glasses with contacts?

Can you wear reading glasses all day?

I can't see things up close and at a distance but want only one pair. What are the other options?

Where is it available?