Well this is how I play it.
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||--22-0-2-0-------------------------|
||------------2-1-0--2---------------|
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and here is a second riff you play somewhere in the song.
[ Tab from: https://www.guitartabs.cc/tabs/j/jimi_hendrix/who_knows_btab_ver_3.html ]
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||--2-0------------------------------|
||-------2-1-0---2-------------------|
||-----------------3-----------------|
This was the first song I could play and this is a pretty good song to start out playing.
When you have a starting blues band (power trio) this might be a good song to practice
because you have to feel (mentally, definitely not physically) each other whenever
the second riff.
