I personally found the birthing class and an infant CPR class to be worth attending. CPR Class for obvious reasons. The birthing class was with a labor and delivery nurse at the hospital I was planning on delivering. We were there with several other first time parents (I think one of them was also having twins) so it was neat to talk to other people who never done this before. The nurse went through everything with us. What labor may feel like, when to come to the hospital, birthing options, pain coping mechanisms, massages to help with contractions, the after math for each birth method, birth control post partem, breast feeding, formula feeding, etc. We asked any questions we could think of and afterwards felt much more informed. The nurse ended up working the same night I was in labor so she came and visited me which was also a nice surprise. I felt it was especially beneficial for my husband. The dads are in the passenger seat during the entire pregnancy so I think attending a formal class helps them feel more informed and a part of the process.