woaaah no problem \o/ It's always so cool to find people interested in traditional media ! ___
Yes, old-style painting can be very relaxing, and I find it more gentle to the hand/wrist (I am sure I have a very bad position when drawing with my tablet)
In my experience, for watercolors, when you've gotten yourself the right equipment, you're halfway there. Two things are especially important, in my opinion : good paper and a good brush.
A good paper to paint would be at least of 300g (140lb) - is that the kind of paper you already use ? It is quite expensive paper-wise, but it really makes a difference!
Kolinksy sable brushes are a PAIN because they are so expensive, especially the very pointy ones! They range between 10 and 30$ for middle-sized ones, depending of the brand, I think ? But that's a very good investment, it won't loose much hairs over time and you can keep one for several years. (and you just need one, all your brushes don't have to be that expensive)
waaah I hope that's helpfull and not too depressing! ;_________;