My oldest hobbies are dogs (as a child Collie Tramp) and photography. At primary school, I started with an Agfa Isola (photo Dirk Böhling), a simple camera for roll film sizes 6x6, which at that time was about 40 DM.
The entry into the network programming is demonstrated by several examples. IYou usually start with the (simpler) programming of clients before some of the servers become a subject. Simple examples are echo-echo client and server, time client and time server, chat client and chat server. At the end of the sequence the game Tic-Tac-Toe is discussed. The implementation of the client is quite simple (the player makes his selection by clicking on the appropriate button), implementing the server makes more trouble: it must on the one hand, all playing fields of the various clients store in a list and have a game plan.