A peice of advice:become fimiliar with the names of the notes n your guitar. When Im trying to play along with a song I dont have tabs or sheets for, I just pluck single notes on the guiar until I find one that sounds right, then I figure out the name of that note. Like ll be playing along and Ill hit the third note of the A string and be like "oh, that shounds good, and thats a C." (you dont have to kow the note by its particular sound, just become fimiliar wth whereall the ntes are on he fingerboard. somtimes it takes e a while to figure out a note.) then play a c CHORD along with that part of the song. usually it sounds right when played along with the song, sometimes you need to make it a minor chord though. bring a chord sheet with you so ou canfind out chords yu dont know. Tell me if this doesnt make sense and Ill try to explain it better; I did a somewhat crappy job this time. :-( nyway, Iveonly been plaing or 11 months and I can already play alongwith most songs using this method, try it out.
That is how I figured out how to play along with the song "Jesus Jesus Jesus" this past sunday at church. I found one note that was in the song and worked my way around that one note and I figured it all out in about 15 seconds. I just needed an anchor in the song to get me going. Once I had that, the rest was easy!!
I have a little Chord-Finder machine that my cousin gave me that lists all the chords that exist for guitar on it's little LCD display screen. It's the "Planet Waves" Digital Chord Finder.
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Dm