knowledgeable

adjective

1. 1

   highly educated; having extensive information or understanding

   knowing instructors

   a knowledgeable critic

2. 2

   thoroughly acquainted through study or experience

   this girl, so intimate with nature"-W.H.Hudson

   knowledgeable about the technique of painting"- Herbert Read

3. 3

   alert and fully informed

   a knowing collector of rare books

   surprisingly knowledgeable about what was going on