#1
i been work to improv o my pentatonic , i haven,t master it yet. after i learn that what other scale should i learn
#7
Learn the major and minor scales, and learn some theory.

http://www.musictheory.net/

Scales aren't just magical sets of notes that you just pull out in the middle of the song, and it sounds good. There is a point of when to use which notes.

I'm sure I sound like an asshole, but trust me on this.