Show wood types bend more easily (willow). Others become very difficult (beech, oak). It was a long time ago that I tried. Bending as much as you want might be impossible in an amateur workshop. But it can be done in another way. Buy thick plywood. Cut out and glue double or triple sheets. It becomes much easier and more stable. If you stain it and treat it, it will be hard to see that it's plywood.
Otherwise, you can find some videos on how to bend wood on YouTube.