Please learn your music theory!!! Its so important to learn at least the basic diatonic theory and, believe me, it'll lessen the amount of frustration you have to go through when learning the guitar.
What i noticed, esp here in college, is that many people who want to learn guitar just cram a bunch of chords and scales an have absolutely no idea why they are playing what they are playing. They fell into the "i want to be good overnight" trap. On the other hand if you learnt your theory, took time to study scale and chord construction and basic harmony, you'll be playing much better than someone who just crams chord-shapes.
Also it'll reduce time-wasting questions like "what scale do i play over this" and stuff like that. If you take the time to learn theory you could hear a chord progression and know (or at least have an idea) of what scale to use over what.
Not only that but learnng your theory along with learning scales and chords goes a long way in helping you form your own chord and scale fingerings. Theory helps you be aware of what is going on around you on the freatboard. Cramming chord-shapes and scales just means you have to be jumping up and down the fretboard unnecessarily when you could stay within a range of a few frets.
Just my 2 cents :).