This kind of thing is hard to get across in writing, but here’s my stab at it. I’m mostly a bass player, but I have a passing familiarity with the guitar, and I’ve played this one on guitar before.
From looking at this page, this book isn’t necessarily rubbish. But it’s not giving you a script, it’s giving you the building blocks you need and letting you put them together.
With a song like this, there are several things to communicate:
- How does the melody go?
- What are the lyrics (if there are any)?
- What is the harmonic (chord) progression?
- What’s the easiest way to play those chords?
- For the accompanying instrument, how does the rhythm go?
#1 is the traditional music notation in the staff. #2 is printed below it. Those are the job of the singer, or another instrument.
As the guitar player, you’re doing parts 3-5. By playing the bottom note of each chord, you’re also the bass player.
#3 is the chord symbols printed above the staff: G, Em7, etc. #4 is the tab grid right below the chord symbol, indicating which strings are open, which strings are played at which frets, which strings aren’t played for that chord.
The two-bar bit at the top is telling you #5 - how does the rhythm go. This is a song which just wouldn’t sound right if you strummed the chords once or twice each bar. Instead, it sounds good if you play each chord as a sequence of 6 notes (arpeggio) that goes up and back down each bar.
The reason they don’t spell out that picking pattern for the entire song is the same reason they don’t write out the traditional music notation for all four or five verses of the song: it’s the same, and if there are little adjustments that need to be made to fit the number of syllables in a word or something, then make them. When you sing Happy Birthday To You and you get to “dear [person’s name]”, you don’t have to be told exactly what notes and rhythm will fit the number of syllables in the name, you just do it.
The important thing is that this isn’t classical music, where you are expected to recite exactly the notes printed on the page, no more and no less. Instead, this page is telling you how the melody goes, how the harmony goes, and how the rhythm goes; now go forth and play it like that! Everything on the page is advisory; nothing is dogma.
I believe it’s Justin of the JustinGuitar lessons on YouTube (which are excellent, by the way) who’s fond of saying “if it sounds good, it is good, and if it sounds shit, it is shit”. Don’t worry about playing exactly the right notes, play notes that fit and sound good.
Here’s an exercise for understanding where that F# (2nd fret) fits in. Sing or hum the melody, and play along on the guitar, but only play the bottom note of each chord. Every time a chord symbol appears, play the bottom note once and nothing else.
G - - - - - E - - - - - G - - - - - E - - - - - G
Sounds pretty dull, right? Now, the same thing, but on the 6th count, play a softer note that leads into the next one:
G - - - - f# E - - - - f# G - - - - f# E - - - - f# G
Sounds better connected, right? This is the “bass player” part of the role.
So, what picking pattern should you play? Play the bottom note of each chord on count #1, play other notes of the chord up and back down on the next four counts, and play a note on count #6 that will lead to the next count #1 note. What leading note do you play on 6? Who cares? Pick one that sounds good. If you like how it sounds, do it the same way next time. If you don’t like it, try a different one next time.
What about the part in the middle where the lyrics are “it goes like this, the fourth, the fifth”? There’s a C and a D chord in the same bar, so you can’t play 6 notes up and down for each one. What do you do? Well, pick three notes from the C chord and three from the D chord, and play them in a sequence that sounds good. Which notes? Doesn’t matter, pick some.
Or, towards the end of the verse where “Hallelujah” is repeated several times. The first four times, it’s over an Em7 chord and a C chord. But each chord is two bars (12 counts) instead of one. So what pattern do you play? Do you do the 6-count up-and-down arpeggio twice for each chord? Or do you start at the bottom, go upwards for 6 counts, noodle around for another couple, then back down, taking 12 counts total? Again, it doesn’t matter. Play something that sounds good. As long as you’re playing notes that are part of the chord, or fit with it, you can’t go wrong.
It can be hard to do this when you don’t have enough technique in your fingers that you can put the notes on automatic and just feel the music instead. But once you can do that, you’re playing music instead of just reciting verbatim from a script. And that’s a lot more fun, and lets you play the song the way you want it to sound, rather than the way the book publisher thinks it should sound.
The other thing you can do is listen to different recordings of the same song and see how different artists approach the problem, particularly the choice of chords and rhythm. There can be wildly different approaches to the same song. If it sounds good, it is good.
Hope this is helpful. Go forth and play!