First of all, to avoid any misconceptions and get better developer experience for all of us. This document contains several pretty simple rules to keep consistency between different projects written on Effector.
Your stores should be distingueshed by a
$. Will you make it as a prefix either postfix - doesn't really matter. This should be done to have a better search experience in your IDE.
Your effects should be postfixed by the
Fx postfix. It will let you differentiate your effects from the events.
There is no any real preferred rules on that. But the proposal is to name events, which directly trigger store updates like it has already done in the past.