Those ball-knots or whatever you want to call them are insane.
BF introduced me to 'serious' whittling a few years ago and I have found that it relaxes me just like sharpening knives.
All the other crap going on just vanishes and my only concern is the ball in cage or crazy faced character in front of me.
The mora makes a fantastic whittling knife but there's something special about completing the majority of a piece with an old Case 6347 stockman or split-spring whittler.
I also enjoy using gouges, palm tools, rotary tools, rasps, chisels, and even fire.
This blurs the lines between whittling/carving/power carving, but they each have their place in certain works and sometimes it's just fun to use multiple tools.
I started using whatever wood I drug off the mountain but now i mainly stick with basswood from Woodcraft, which is heaven for this stuff. And I also carve ebony, black palmwood, coco, walnut, several forms of burl, and purple heart, which is insanely hard and chipping my gouges.
Just follow along with a few you tube vids for beginners or just carve the first thing that pops in your head and whittling (with traditional slip joints) gets better everytime.