Open up audio for the riff and follow the tabs. Open the song that you're covering in another window on your internet browser. Play through the song and trace the chords and notes with the tab that you looked up. Try to follow the numbers on the tab with the notes that are being played in the song. Try to get an understanding for which chords the artist is playing before trying to duplicating it.
Learn how to transition to different chords. One way to become proficient quickly is to learn how to transition between the various chords quickly. These transition periods are often the hardest for beginners to play when they are starting off. The more you practice between switching to different chords, however, the better you'll get at doing it in songs. Practice switching between open chords like G, A, E, and C. 
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Minutes 60-600. Pick up the guitar everyday for 20 days for 30 minutes or so. You can do this while you do other things like watch TV or chit chat. Get your fingers used to moving around on the fretboard. Start jamming out some John Denver baby. Please do sing along. Eventually try to keep up with tempo of the changes in the actual song. Once you can change your chords on time, focus on improving your “touch” with your right hand. Strum the chords in a way that it adds texture to the recording (if you are playing along with the man himself.)
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.
Play Guitar! turns your Windows 8 machine into a virtual guitar. You can press and strum strings, just like a real guitar. Play Guitar! helps you learn what notes lie on the frets of the guitar. It is a very useful tool for every aspiring guitarist. Now, there are available an advanced chord editor and the possibility to use guitar capo (only for PRO users, In-app purchase) The app is easy to use and light.
Strum with loose, relaxed motion. Strumming consists of downstrokes and upstrokes in various combinations, striking all the notes of the chord evenly and rhythmically. Use your wrist to practice smooth up and down motions. Keep your elbow in tight towards the guitar and sweep the pick down all the strings. Your elbow should not move very much, as you strum mostly from the wrist.
Start off figuring out what style you are looking for. Is it acoustic or electric? What music styles are you looking for? From country and bluegrass all the way to heavy metal and rock, there are so many different styles of guitar music. If you are just starting out and are not sure what to begin with, this is okay. Some instructors are very good at teaching beginners and helping them find out what they are passionate and good at. If you do know what you are interested in, the best thing to do is to find an instructor that teaches that style. On Lessons.com you can do this by reading through the teacher’s description.