im just getting into joe satriani, what do you recommend i should learn technique and song wise. any particular scales would be good aswell.

Hmm... everything?

Tapping - Surfing with the Alien
Two-handed tapping - Midnight
Finger picking - Tears in the Rain

Songs I'd recommend would be Friends, Summer Song, Why... hell, I just recommend the album The Extremist. That's my favourite.
if you cant figure that out on your own, you may want to start with someone less complex than satriani