Hi and welcome to PC, Marie31.

Here's a link to a site I like a lot. It has a great question and answer section that talks about transference as well as a separate section (get there by the link) on transference.

Transference happens every day in our lives. One example would be going to a restaraunt and immediately liking the waitress because she reminds you of your sister that you love.

In therapy it is also about relating to the therapist as you did in a relationship in your past like in the example with the waitress.

Here's the link to the stie I mentioned: www.guidetopsychology.com. It's very interesting and I hope you like it!