careful, uploading anything that has a copyright can get it taken off the smilebasic server and earn you a possible ban, you might want to re-read the eula
ptc1 had a .txt to qr converter online, but ptc3 doesnt have camera access. that audio transfer might work to get it off a 3ds but not back on since the 3ds headphone jack is only headphones and mic interaction seems to only be able to pick up audio spikes but someone might get it to eventually.
if you need a physical keyboard just wait for the wiiu smilebasic thats on its way
you will have to find out of game reading materials; smileboom has a few tourtorials/pdf to get started, that said basic is pretty... basic, though not too practical these days
its used to make games/programs in 'basic', that said it wont directly teach you how to use it... i got it to download other peoples games mostly, maybe learn something along the way