Try listening to different styles of music for inspiration as you learn to play. If you're trying to learn to play by ear, listen to the blues and try to mimic that sound. Blues progressions are especially great for learning to play guitar because it's built on the basics of music theory. Once you learn those progressions, you can start practicing them in different keys, as well.
There's an abundance of guitar information out there on the web, some good, some not. I stumbled across Justin Sandercoe's site a year ago and now tell everyone about it. The lessons are conveyed so clearly, concisely and in the most congenial way. The site is laid out logically as well so you can to go straight to your area of interest... beginner, blues, rock, folk, jazz, rhythm, fingerpicking... it's all there and more. Spend ten minutes with Justin and you'll not only play better but feel better too. From novice to know-it-all, everyone will learn something from Sandercoe.
C-chord: Place your ring finger on the third fret of the fifth string. Place your middle finger on the second fret of the fourth string, and your index finger on the first fret of the second string. Strum all but the sixth string. Then, go back and play each string individually, while still playing the chord. Make sure each string rings out clearly.
Once you have made it to your first lesson, there are some questions you should consider asking. Ask the guitar teacher about their experience. How long have they been playing? How long have they been teaching? What are they best at? What styles do they teach? What is their method of teaching guitar lessons? What extra resources can you use to further your learning? It is key to ask these questions and listen.

Use tabs instead of sheet music. If you don't already know how to read music, it can take a lot of time to memorize and proficiently read sheet music. Tabs are an easier and more intuitive way to write music for beginners that doesn't require any formal education. Tabs will simply tell you where to put your fingers on a fret board and how to generally play a song.[8]
Play the song with the audio recording. Once you've mastered the individual portions of the song, you're ready to play the song in its entirety. Play the song and strum your guitar along with the song. Try to keep up with the tempo of the song you're covering. Follow the tabs as you play. If you mess up, follow the music on the tabs and come back into the song when you're ready. Once you've become proficient at playing the riff, continue practicing until you don't need the tabs anymore.
Brent Bassham began playing guitar at the age of fifteen as a self-taught until he began his studies as a freshman at Tyler Junior College. His talents were recognized by his instructor Frank Kimlicko who awarded him with scholarships and twice as the Outstanding Guitar Student of the year. He has been taught by master teachers such as Brian Head (president of Guitar Foundation of America), Miguel Antonio, Grammy Winner Maestro Pepe Romero, and Grammy winner William Kanengiser. He has also been selected to perform in public master classes with: Pepe Romero, Angel Romero, Enric Madrigera, and David Russell. He learned a wide range of ... View Profile
String$:  When you're done playing, wipe your strings with a cotton cloth or old T-shirt that's been treated with a small amount of light household oil such as WD-40. This cleans the strings and displaces moisture that can shorten string life. This simple process will extend string life 3 to 4 times compared to untreated strings, saving you money, and giving you more time to spend playing your guitar instead of changing strings.