All good information to have and things I could have included above, but didn't think of, good catch Remnant. I can't get it all in one post do to time constraints, but yes I'll put that info here.
Initiative - In Numenera, initiative is pretty simple. It is a Speed Test, with a difficulty equal to the monsters level. Effectively just a d20 roll where you need to get a number equal or higher than 3x the creatures level. So a level 2 monster you need a 6 to beat it and act before it. You are allowed to use Effort and Edge to make this task easier if you want, just like with other tests.
Do to the slightly sporadic nature of Play-By-Post, I have come to appreciate the use of 'Faster Initiative", wherein characters from one side act, then all the others get to act. This text is on pg 90 of the core book, but I will post here for easy access.
To make an encounter move faster, if at least one character rolls high enough to beat the target number of the NPC(s), all the characters act before the NPC(s). If nobody rolls high enough to beat the target number of the NPCs, all the characters act after the NPC(s). On the characters’ turn, go clockwise around the table.
So when it is time to roll initiative, I will give you the highest level or target number to beat, though you may not know which enemy that is at the time. As long as one of you beats it, the players can act first. You won't need to wait for me to establish an order. You won't even have to wait for every player to post really. If you see that one of you beats the target number, then just post your action. I imagine this we will basically be posting reactions and actions all at once. But we will see how it plays out.