That link is to a 5 string - have you gone straight to the dark side??
Check out StudyBass.com as an excellent free resource to start learning bass. I really recommend reading his lessons, especially the starters. Things like how to hold a bass, avoiding injury, all worth getting down early.
Scotts Bass Lessons is also excellent, cost works out around $100, which is the equivalent of three decent lessons.
Happy days 🎵🎵👍
(There are some good reasons to play 5 string though. Which is why I bought one a couple of weeks back 😉)