I have been attempting to learn the rudiments of pentatonic scales. To the extent that I am beginning to remember the notes/intervals/patterns of the major and minor pentatonic scales in the various keys.

It will probably be no surprise to you that I am struggling to find suitable fingerings, when trying to improvise using the scales. I wondered if anyone could recommend books or other sources of corresponding exercises, which it might be beneficial for me to work through? Or examples of improvisations with fingering to study?