The internet is an excellent resource.
But, some old school, advice, start trying to play along to your favourite songs. Don't worry too much about the actual basslines, start by trying to follow the chords and the rhythm , just playing root notes.
In my (somewhat limited) experience, people give up on playing an instrument because they get bored doing endless scales and exercises.
A bit of real world application is a lot more fun.
The rest comes along the way.