Setting up a chess client

Today, I went to a person's house to help them set up BabasChes and teach some tactics.  I set up the chess client in about a half-hour and spend another half-hour showing them how to use it.  They preferred the default BabasChess options and formula.  After showing them how to use BabasChess, I introduced them to Jin, an online interface that works with Mac.  It worked well, and we completed the setting-up of the interfaces.  After that, I had my dad play a game with them.  I helped them with tactics and position.  They seemed to learn a lot.  After two hours had elapsed from my arrival, I left after collecting $45 ($25 for the first hour plus $20 per additional hour).  I paid the driver (my dad) for the ride home and came out with a profit of $40.