I want to change my level (Beginner to Intermediate)  

I started to learn guitar in 2002. That time i got myself admitted in a guitar learning course and learnt basic guitar like Scale, tuning, Basic Chord & Rythm.
After one month i left it as i joined in a job. But i used to play guitar once a week. I have a fender- Acoustic.

I know the Chord family- C Dm Em F G Am B(dim)- in other scales and uses. I can hold any major or minor chord.
I can play simple solos on one/ two strings.
But I can't do
Other Chord uses like A7, A sus,
Picking
Plucking
Lead in multiple string
Harmonics

but now i'm determined to learn the rest seriously as it is pone o my passion. I searched many sites for continuous lessons with exercises, But none is in order. But I can admit in course now.
Plz suggest what should be good for me now!

Thanks in advance.