I think you will find learning
to sail / cruise
is no big deal.
The most difficult part may be learning
the nomenclature , the vocabulary .
This language must be understood to be safe , the difference between jib
and jibe could get you killed.
Any basic sailing book should be fine , there are about 100-200 specific terms to learn , and understand..
Any old cruising book" Cruising under sail" " Voyaging under sail" Hiscock will explain what happens during a voyage.
With even a hand held GPS
and a chart there is now little danger