Getting around in ghidra
The main aspect of dealing with gidra is to analyse the code and "reconstruct" the work and action the code does during it's excution. Reverting the funktions, calls and variables to human readable labels helps a lot to complete this target.
function graph view
Windows -> Function graph
Note the different colors of the arrows
green: conditional jump, condition is met
red: conditional jump, condition is not met.
blue: uncondition jump, end of block.
instructions
conditional jump "jump if zero"