I want to teach myself how to play the guitar, and I need to have a decent instrument to begin with.

Any suggestions?

I would choose Seagull S6 Original if I were you. Why? There are lots of reasons why

There are also couple other guitars that you might consider, but I won't list them here, I've already did on my blog post

Check it out here: http://acousticgo.com/how-to-choose-acoustic-guitar-for-beginners/

It's a complete guide for beginners to choose their first guitar. You'll find reviews there too, including Seagull S6's.
“Music is a necessity. After food, air, water and warmth, music is the next necessity of life.” - Keith Richards
Thread was moved to forum: Acoustic & Classical Guitar

Your question is so vague that I almost want to close this thread. Please provide some more details, such as your budget, experience (sounds like none), music preferences, styles you want to play, etc.
My God, it's full of stars!