The verses are just D A D A  ... as many as needed with the change
occurring on every second bar. There is an additional two bars of D 
at the start as well.
The way to play it is something like this:

 D.   .   .   .     .   .   .   .     D.   .   .   .     .   .   .   . 
|-----------------|-----------------||-----------------|-----------------|
|-3-----3---------|-----------------||-3-----3---------|-------------3---|
|-2---2-2---2-2-2-|-2-2-2-2-2-2-----||-2---2-2---2-2-2-|-2-2-2-2-2-2-2---|
|-0---0-0---0-0-0-|-0-0-0-0-0-0-0---||-0---0-0---0-0-0-|-0-0-0-0-0-0-0---|
|-----------------|-------------0---||-----------------|-----------------|
|-----------------|-----------------||-----------------|-----------------|
 A.   .   .   .     .   .   .   . 
|-----------------|-----------------||
|-----------------|-----------------|| \ repeat last 4 bars throughout
|-2-----2---------|-------------2---|| / verses.
|-2---2-2---2-2-2-|-2-2-2-2-2-2-2---||
|-0---0-0---0-0-0-|-0-0-0-0-0-0-0---||
|-----------------|-----------------||
The dots show the beat.
Use moderate amounts of overdrive, and mute the 2's with your palm to get
the distinctive percussive sound.               0
The Chorus chords are |Bm |A |D |G |Bm |A |D |G |Bm |A | (I use B  instead of Bm )
use standard open A ,D , and G  and a barred A  shape for B .
The keyboard riff is sort of an arpegiated D  and A  ie.
 D                                    A 
|-0-----2-----3---|---2-----0---2---|-----------------|------------------|
|---3-----3-----3-|-----3-----------|-0-----2-----3---|---2-----0----2---|
|-----2-----2-----|-2-----2---2---2-|---2-----2-----3-|-----2------------|
|-----------------|-----------------|-----2-----2-----|-2-----2----2---2-|
|-----------------|-----------------|-----------------|------------------|
|-----------------|-----------------|-----------------|------------------|
This sounds a bit messy with overdrive, so play it clean, or (even easier)
just play the melody part (which is mainly what you hear on the CD anyway)
e|-0-----2-----3---|---2-----0---2---|-----------------|------------------|
b|-----------------|-----------------|-0-----2-----3---|---2-----0---2----|
For the key change after the second chorus, the chords are:
 |F |Bb |C |Bb |F |Bb |C |C | again use the barred A  shape for Bb  and C .
That's about all for Summer of '69