As mentioned on last week's stream, this week you've got a couple of bass tuning tutorials for extra, exclusive learning
The first part looks at music theory basics, so is more suited to beginners or people with less of an understanding of major and minor keys. The second part then gets more advanced and goes into the harmonic series and understanding why some bass patches end up with major intervals in them, as well as how to avoid or fix this when required.
Enjoy!