The tutorial is mostly supposed to guide you along from the basics of the library to very advanced things like setting up numerical Redfield Liouvillians and such with the help of specific examples.
The examples build on each other, so the single chapters should be read in order. Also, note that the code itself is extensively documented using Doxygen, so the tutorial will not cover the capabilities of the individual classes, but rather how you put them together to get the results you want.
Note that, since WavePacket is still in its alpha stage, there may be minor inconsistencies in that certain classes are in the repository but not yet released or that interfaces have changed slightly, but without updating the tutorial.