Navigation is a blend of science and art.
I love my electronics but!!!!!!!!
I still use paper
charts and can work an accurate fix with a sextant.
Utilise all available means to know where you are, at all times as the sea is an unforgiving mistress.
A sextant is a valuable tool for coastal sailing as well,ie horizontal fixes from known objects from the shore .
If you can add subtract and tell the time then celestial is easy to master.
I find celestial navigation enhances the enjoyment of sailing.
Ther are some excellent books on the subject I would strongly recommend "Celestial Navigation for Yachtsmen" by Mary Blewitt.
Regards
Vincent Maurice