First off, for future posts, this should of been posted in the General Scrolling forum. Now for your question. As a Scroll Saw instructor, I start my students off on 3/4 pine. It’s inexpensive and easy to cut. Some folks will say that the blade will wont to follow the grain, but with the blades you have chosen, you will not have that problem. Start with drawing and cutting straight lines, then gentle curves, then tighter curves. Once you have gotten the feel of cutting and how the blades track, you can move on to Hardwoods and Baltic birch plywoods.