This is what I did and it worked so that's what I'm recommending.
Scrap the amp idea and get a nice PC audio card with guitar interface and a nice headphone. It doesn't have to be a Sennheiser. Those will be a lot more useful in the beginning than an amp and will let you practice more and comfortably. PreSonus Audiobox or Focusrite Scarlett are both fine for this job.
Next, find bass backing tracks of your favorite bands and play along. Lots of song specific tuts on Youtube. Some are wrong, some are correct, you'll figure it out.
Do this everyday and you'll be able to play at increased speed and accuracy in a shorter time. Study songs part by part, then connect it all. To be able to play what had seemed like an impossible song before, perfectly, feels great! As you learn new songs and especially by different bassists and groups, you'll learn different techniques. As you gain finger strength and keep feeding your cerebellum, you will gain confidence and keep going. Slow and steady. Finally, don't be afraid to use a pick. Some songs and sounds require it. Picking also leaves more capacity for your left hand generally in the beginning, so not bad while mastering a song. But two and even three finger style is a must of course. Enjoy the adventure!
Scrap the amp idea and get a nice PC audio card with guitar interface and a nice headphone. It doesn't have to be a Sennheiser. Those will be a lot more useful in the beginning than an amp and will let you practice more and comfortably. PreSonus Audiobox or Focusrite Scarlett are both fine for this job.
Next, find bass backing tracks of your favorite bands and play along. Lots of song specific tuts on Youtube. Some are wrong, some are correct, you'll figure it out.
