Using either bitcoin-cli in your terminal, or a Jupyter notebook in conjunction with the TestShell class from the Bitcoin Core Test Framework, try to complete the following exercises.
Changes to the codebase will require you to re-compile afterwards.
Don’t forget to use the compiled binaries found in your source directory, for example /home/user/bitcoin/src/bitcoind, otherwise your system might select a previously-installed (non-modified) version of bitcoind.