Lamaze classes for a mom on a budget?

Okay well I'm a pretty shy individu and my local center has classes set up.for expecting mothers that are free. The problem is I have really bad anxiety around people that developed after high school. (It stemmed from an emotionally abusive relstionship and a physically abusive one before that) I'm able to work around people but this just puts me in a severely uncomfortable environment. Also my husband works every day until 10pm too. Is there any good birthing classes online or at home that are free and can make you feel like you're actually learning something for when you go into labor?