My agency accepts these from FCAC, but be sure to ask your agency. Each county/state is different.
Foster Parents Community and Online Training and click on the tab at the top that says "online training." These course are not free, but cheap. They are approximately $2 per hour of credit. So 10 hours of credit would be $20.
You can also take online classes here:
FosterClub.org | for Grownups - Online Training. I am pretty sure that these are free.
This one
SocialLearning.com, Foster Parent College offers courses for $8.
Be careful because your agency may require that a certain percentage of your classes be done in person. My agency requires that we attend classes for 50 percent of our training ourse. The other 50 percent can be online.