Hello and welcome to the campaign!
Besides everything Eric mentioned above, I recommend first selecting the rule set you are most comfortable with and enjoy. We publish Arcanis in two different rule sets - the Arcanis Role-playing Game (ARG) and a 5E variant.
We release adventures for the 5E Organized Play Campaign (Living Arcanis 5E) at a rate of 2/month (with the exception of February) until we catch up releasing the back log of adventures.
Legends of Arcanis (ARG) are released at a slightly less speed as all of the Coming of the Destroyer arc has already been released.
As Eric mentioned, the Organized Play campaign stories are released in STORY ARCs.
The Coming of the Destroyer arc leads directly into the
War of the Paragons arc, which is the current story line.
If you use Facebook, there are two very active Facebook Groups that you might enjoy.
One for just setting questions and information:
https://www.facebook.com/groups/6431691 ... =bookmarksThe second specifically for Organized Play and rule's question posts.
https://www.facebook.com/groups/6431691 ... =bookmarksEnjoy!