Hi,
It should be 15 hours for B-basis. (general foster care)
I did the bulk of mine on-line and my agency told me they give us 3 hours for home visits. Then I did one book review and one video review for the 15 hours. I was rushed because it seems like, due to the economy, there were a lot less in-person ways to get your hours in. Also, a lot of community colleges have free classes throught their foster-kinship programs (I only found out about these later).
Here are two on-line courses:
Foster Parents Community and Online Training (this one is a lot cheaper)
Adoption Education (this one is $100 but I didn't know about the cheaper class until after I had paid for this one.)
Hope this helps