#1
gettig into fingerpickin' alt tuning country blues stuff.

any suggestion of course youtube/book/internet exercises or tabs?
#2
Have a look at the Homespun instructional material. They have been around a long time and have plenty of choice.

Do you plan on playing slide or just fingerpicking? A couple of my favourite non-slide fingerpickers who use open tunings are Blind Blake and Skip James, neither are particularly easy.