Ahmed,
I would recommend two pairs of resources. First, if you want to build your level of Go above the basic, get "Learning Go" by Jon Bodner, and check out his Safaribooks Online "Go in 3 Hours" video. Once you're solid there, look at William "Bill" Kennedy's "Ultimate Go Course, 2nd edition" on Safaribooks Online. There is an "Ultimate Go notebook" that parallels the course.
Coursera has a specialization on Go, from UCB. That might interest you as well. If you did that, I would put it between Jon's book/course and Bill's. The UCB course is better if you have a decent introduction to the langauge before starting.
Leam