It is a truth universally acknowledged that once you’ve learned how to play the first six The Beatles singles you’ll be in possession of everything there is that you need to know about writing a song. Song writing, I should stress, is not the same as making a record, as John Seabrook’s excellent The Song Machine explains in detail and at length. But I digress. With the benefit of knowing how "one gets the impression that they think simultaneously of harmony and melody, so firmly are the major tonic sevenths and ninths built into their tunes, and the flat submediant key switches” one can all the more appreciate the “Yeah, Yeah, Yeah!”'s that tend to round off those early choruses. Listen and learn, kids, listen and learn. My own personal road map on the way to song writing enlightenment on the other hand, was Neil Young’s Comes a Time. Once I'd reached the point where I could play all the way through the whole album I knew what I wanted to say, how I wanted to say it, and had also developed a penchant for checked shirts, the key of 'G' and battered straw hats that has withstood no little critical opprobrium even to this day.
*And it closes with a great big fuck-off gong. Which is awesome.
*** Which in turn is not a patch on Scarborough, by Farrah, which covers pretty much the same sort of ground lyrically, but which has a better chorus.