I always say it's like gulf. If you don't let it frustrate you it's very relaxing. I watched a lot of you tube until I could tell where and why they were going to hit stone. Then all you have to do is figure out how. Not sure if I can say names of you tube guys I think it's ok. For me bohunter was a huge help. He's good at explaining, fast, and funny too. I think I got the name right if not maybe someone else can correct me. Just try to have fun and play with anything you can knap, glass bottles, old Tv's. It's not nearly as frustrating when your not making expensive gravel. Good Luck
Bjrogg