learn&master guitar

I recently learn the Guitar alone !
Guitar already existed that my brother bought
But he don't keep learing guitar  And guital was covered with dust.
So I learn guital with all possible material , such as internet , portal cafe,
free training video and books
I only had learned  piano a little as music instrument at middle school
I hope to learn piano again. but I think it spend much time rather than guitar

thus I found good free training video and books.
The video shows simple learing and step by step training in order to understand easily

It's cool contents ! For my master Guitar , I'll try practice and practice