Writing a bassline in any style really isn't that hard. You can do it if you know a little bit about the genre and what scales to use.
Here are the other styles in this mini-series.
Make sure you watch Part 1 where I explain where the notes and chords are coming from. This is a crucial step to bassline mastery! Here's another lesson that demos the same ideas:
Hip Hop Drumbeat 98BPM
Hip Hop Chord Progression
Want to know more about creating basslines? Head over here.