This page lists some signing sites I recommend, products I like and anything else I think could be useful to other parents. Some of the sites do have affiliate links to them. That just means if it is a site that is selling something, I get a small commission when you buy. This does not increase your cost.
If you would like to learn more about ASL I highly recommend ASL University. This is a free site to learn ASL and some Deaf culture. This is my go to site for ASL.