Does anybody know of any good sites where I could learn two handed sign language/?

My great-aunt is coming to visit us and she’s deaf but nobody in my family knows sign language. We don’t want her to feel ignored so we figured we should at least learn the basics. Is it hard to learn and how long should it take? Thanks! .

What do you know about carpal tunnel and Sign language?

I have been told that I may want to reconsider studying sign language as my career path because many interpreters develop carpal tunnel! Is this true?? Is there anything I could do to prevent it? Exercises? Any preventative actions? Thank you, any help would be great : ) .