Surprise! Chapter 5: Starting a Multiplayer Game - PDF and Source now available.
In Chapter 5 we finally get into some actual joining a multiplayer game code. It is set up so you can run the game as single_player, client, host, or dedicated server. Chapter 5 is probably one of the most complex chapters so hopefully we can cruise to the finish now.
There may be some missing pictures in PDF, since all pictures magically disappeared and I had to back track to try to remake them all. Which naturally made me very unhappy

, but of course, matters not to you

, heh.
The next chapter will cover Getting Input on Clients. It should be pretty short.
As usual, it is at my 3DGS link below under multiplayer.
EDIT: Naturally, since I am writing the tutorial as I write the code, I have found a few problems. I have now coded the next 2 chapters now already and have found that my wonderful level design, well, aint so great, so I will be adding some blocks to the edges. A few other minor code changes will be done too. I will post when I have made all the changes and they are uploaded. Should be tonight.
Sincerely,
Loco