it is all slaping and plucking
s = slap
p = pluck
/ = slide
[ Tab from: https://www.guitartabs.cc/tabs/s/sly_and_the_family_stone/thank_you_btab.html ]
G -------------9---7---9---------------9---7----|
D ----------------------------------------------|
A ----5---7------------------5---7--------------|
E -7--------------------------------------------|
s s s p p p s s p p
G -------------9---7----9---------------9----7--|
D ----------------------------------------------|
A -----5---7-----------------5/7----------------|
E -7------------------------------0-------------|
s s s p p p s s p p
thats the whole song you just play it over and over agian