Welcome Fizzid! You've made a wise decision. Just don't overdo it in the starting phase, because you're bound to experience a little stress while learning. And take care to observe other good habits like position changes, underarm rests if you can get'em, breaks, good enough lighting etc.

If you have real problems, I recommend ergophysiotherapy to strengthen the fine musculature and local circulation. Basically that's about a very light load and lots of reps, working the whole muscle ensemble from fingers to shoulders - but to get it right you should really have expert help because it should be fitted to your individual physique.

There's also those lovely Kinesis boards that transfer a lot of work to your thumbs and let your hands rest more naturally. Never went for one myself, but I hear they're good. Not sure what switches they use because that's another issue: I'm partial to buckling springs myself these days and I do believe that you don't want to be using cheapo membrane boards too much because you'll keep hammering your fingers into the bottom with those and those shocks aren't good for you - it's like running on asphalt with bad shoes! I believe the Kinesis boards use good tactile switches though - but they are expensive. Should be worth it if you need it of course.