Think of it as playing a succession game. Load the game, have a look, relate the instructions as best you can to what you see. You'll probably find getting started takes the longest as you become familiar with the game situation and the instructions. As you play the game, log what you do in the chat window, just like logging a succession game or GOTM. You will have to interpret and use your civ skills when playing as the instructions will not cover everything. Make decisions based on general intention in the forum if there is not a specific instruction. If it is something that needs to be discussed then don't worry and stop so it can be asked in the forum.
Have you managed to get into the chat? I'm logging so don't worry about that, just use the chat link in the forum, when you get into #civfanatics type /join #turnchat to get into the place for the turnchat.
Any specific questions I'll be happy to answer, once you've played a bit you'll get into the swing of it.