Modes! Before you ask...
 

Okay, recently we've had some kind of modal plague. It's getting on our tits quite frankly.

The main problem is that people without solid foundations try to build on them and then they ask questions which are impossible to answer helpfully.

Before you ask anything about modes, you must be absolutely stone cold certain about -

Intervals (names and sounds)
Scale formation
Diatonic chords
Relative major and minor keys
Chord progressions and how they create and resolve tension
Chord extensions

... and how the above apply to the fretboard and playing.

Once you have that down, check out these threads -

The big daddy - Corwinoid on modes - http://www.ultimate-guitar.com/foru...ad.php?t=187159

Colohue also did a wordy but pretty good series on modes starting here - http://www.ultimate-guitar.com/colu..._backstory.html

Darren with some fairly easy to follow mode lessons with examples so that you can hear the results -

http://www.ultimate-guitar.com/foru...ad.php?t=997405
http://www.ultimate-guitar.com/foru...ad.php?t=999592

And finally, here's a really great site with lots of modal licks to really get the sounds of each mode into your head - http://www.guitarshredshow.com/

Okay! Now, if people just try to jump in at the deep end with these mode things, tbh, if you can't even play a few solid major key progressions and explain why they're solid - I'm just gonna close the thread with a "you're not ready for modes" and a :).

Glad we understand each other, peace out.