The first one (describe how she came to be ruler of Egypt) can be summed up thus:
basically, cleopatra and ptolemy come to throne, cleo gets chased to pelusium, pompey comes looking for money but loses his head, julius comes and gets pissed off, says "stop the fighting and the losing grain, cleopatra rules with ptolemy" ptolemy's boys don't like it, big war in alexandria, julius wins, ptolemy drowns, cleo ends up ruling alone