Hello, BSA. FYI, there are thousands and thousands of easy 2 and 3 chord song out there waiting for you to learn. Some country, some rock n roll, some blues, some pop, some in whatever style of music that excites you. If you were only to learn only 1 chord progression (ie "G...C and D") you could play forever. (but this would get kinda boring after awhile). From one song to another the chords will remain the same (or very close) in structure with only the timing (beat) changing. Look thru the song's section here on Chordie and find something you like, print it out, find a recording of the song, listen and learn the beat and play along. If you are new at playing be sure to take things slow. Learn your chord progressions. learn how to transpose songs to different keys and most important learn how to make chord changes smoothly. If you learn these basics, first, it will cut down on the frustrations later. Think about how you want to play, do you want to be out front playing all the lead licks and riffs or do you want to be the heart of the song and play rythem? Believe me, without someone playing rythem and setting setting down the timing (along with drums, keyboard, etc) a lead guitarist will have difficulties playing. Also, anyone singing will listen for the lead guitar but their singing will follow the rythem of the song. Figure out what / how you want to play. learn the chord progressions, learn scales and practice, practice, practice.
nela