Hi William
I played the bass at the age of 12 in 1963 when the Beatles were going stong.
All I can say is learn the notes on the fretboard which is something I am only doing now at 69 on the guitar. It has taken me a month to do this and it is amazing how much it helps.
Also keep it simple. It is great now as you can extract music and just listen to the bass thanks to computers.
Good luck.
John