I have heard it is possible to use "would" instead of "used to" - for example in this sentence: I used to go there (when I was small) = I would go there.
Is it true? When do you use would? Do you use it also for expressing the past (about something that happens again and again)?
It's possible, but only for actions, not states:
When I was young, my parents would take me swimming every week.
When I was young I would live in the Midlands.