Tutorials
Here are some tutorials on using Stone Soup that also introduce some topics of state estimation and tracking.

1 - An introduction to Stone Soup: using the Kalman filter
1 - An introduction to Stone Soup: using the Kalman filter

6 - Data association - multi-target tracking tutorial
6 - Data association - multi-target tracking tutorial

10 - Tracking in simulation: bringing all components together
10 - Tracking in simulation: bringing all components together
Data association
Here are some tutorials which cover additional data association techniques.
Filters
Here are some tutorials which cover additional filtering techniques.

Accumulated States Densities - Out-of-Sequence measurements
Accumulated States Densities - Out-of-Sequence measurements
Sampling
Here are some tutorials which cover sampling techniques.
Sensor Management
Here are some tutorials that introduce sensor management using Stone Soup classes.