[delondcosta27]

I'm dee,
iv been playin for a year exactly and im more or less an intermediate guitar player....i guess....well i have alot of rock songs under my belt including little wing if u wish to count tht and i am in 2 bands and yup have even come up with a couple of songs...even though iv just started learnin improvising and scales .. but i still need help with theoryyyyyyyy umm yeah i know most of the basic stuff but i really dont understand circle of fifths!!!!just that u take a note and list the major scale for tht note and find the fth note and continue on like tht but i reaaaaly dun see how it tells you the key of the song
anyway!!i'll post the rest of my probs on the correct thread

[allthumbs]

Sounds like your more than ready to buy Kirks Plane Talk material. It will clear up a lot of practical music theory questions as well as greatly sharpening your improv skills.
5ths can be handy in writing tunes for chord choices. I think of V chords as one part of The I,IV,V chord progression. I have pretty much memorized them, a simple memonic is all thats needed. Since most tune are written in or a variation of this structure, it can really help you keep track of what's going on in a tune. There have been a couple of posts here about them. Do a search if your interested.