vcarela

What you really want to know is whether to buy now or not and there is no answer for that.

But as others pointed out, bitcoin & cia is no longer a crazy idea from Internet. It is now a deeply studied idea that has been around for quite a long time, so people started to trust in it, and after all, this is mainly a matter of confidence.

As far as I know, it is not illegal to share copyrighted content with your "friends" if you are not getting profit out of it, at least in some countries in Europe. I don't know the regulation in USA, but this is probably not allowed there.

This is mainly related to "private copying". You can find more information here:

http://copyrightuser.org/topics/private-copying/

If you are interested in the new trends in AI, Deep Learning by Ian Goodfellow can be your choice!