I have been practicing with Kirk's True Beginners Lesson which is based on G D Am Am G D C C. Its a tune you will recognise, and there are several vids that take you through, but the best thing is the backing track which has a metronome included and it goes through about 5 repeats. I just keep plugging away and am gradually improving.
I also put it through Audacity and slowed it down so I can play along at the speed I can manage and will increase speed as I improve.
The link is
here
One good thing about music is that when it hits you, you feel no pain - Bob Marley