Practice tips
General mountain dulcimer or music discussions
Hi @YeahSureOK. The first thing I'd say is that whatever you do, you have to enjoy it. If you start thinking of practicing as a chore, then you'll not play as much and just won't have much fun. Personally, I play scales a fair amount, both up the neck and across the fretboard. Scales help for both right- and left-hand technique, and one reason I enjoy them is that you see progress really fast. When you practice a song, you get better at that song, but when you practice scales, arpeggios, and other exercises, you get better at all the songs you play. And you also make it easier to learn new songs, too.
If you don't know how to get started on scales, let me know. I'll point you to some exercises that I developed for my students. I think I also developed some flatpicking exercises. I'll see what I can dig out.
I would also recommend arpeggio exercises. There are a couple that I do that I got out of Aaron O'Rourke's book Faster, Cleaner, Better: A Collection of Exercises and Etudes for Mountain Dulcimer. I would also recommend Mike Casey's book Hands-On Dulcimer, which has a ton of exercises for both hands.
Once you examine the exercises that others have designed, you'll see that you could design your own as well. I would start with a question: What technique or techniques do you want to work on? Then you can find or develop an exercise for that precise purpose.