When you are due your 1st scan (approx 14 weeks pregnant) you have a talk then with your midwife, she puts you through what's going to happen in the up coming months ahead, then she will ask you if you are keen on parenting classes. I told her at the time >yes!! But I went once and never went back, in fact I had spoken to a number of moms & dads that said they wernt keen on them at all, and how nothing prepares you for labour.
Then there are women that love the classes & found them intresting and helpful ...I just didn't...But that don't mean you will hate them...You may like attending...Give it a go and see.
At my 14 week scan I was asked a lot of questions not just about parenting classes, but my birth plan also ect...If your midwife don't talk to you about such classes, then you must ask her.
I forgot to mention...When you do see your baby for the 1st time on the monitor and they give you the scan pic.....Nothing can wipe the smile from your face, and you find yourself showing everyone :d <--looking like this
good luck