if you're interested in testing out this card making hobby, taking a live class is great! There are a ton out there, check out your local Michael's, Joann's or local craft store. Other options are paper supply stores like paper source or your city's park and rec center.
Paper source's class was reasonably priced ($28) and they supplied all the materials and tools! (#bonus!)
If you have some supplies and want to go the online route for classes check out:
Here are the cards and small projects I made at the paper source class. The class was made even better with a friend :)
Howdy there and welcome!