Hello, im some what of a starter at the guitar. I know most of the common chords but still practicing. I also know some songs such as Smoke on the water,Blitzerk Bob, and some Cream. I would like to know what i should start learning next, im working also on Bar chords and geting my E and A chord whole steps and half steps down.I been only playing for 3 months and wanting very much to get alot better, whould love somone to give me lessons.Also, I have a Fender Startcaster, dont let the name fool you not Strocaster but "Starcaster", its only a $259 guitar, wanting to upgrade, would like to know some opinions on what should i buy next.

I hope you can give me some advice :)