Myself & hubby considering fostering...

Just wondering if anyone out there has ever fostered long/short term or knows someone who has?? We are looking to foster long term with possible adoption eventually ages 0-5. My father in law & his wife are currently fostering & find it so rewarding. We have a son who is 7 and loves the idea and have been ttc bby no2 for 5 years with no luck. I love the idea of giving a child a home. Xx