Since the adoption of the stewardship agreement, we're in a process to give stewards to all members, new contributors, and anyone else who wants one.
As this process gets underway, the intention is to update this guide with what we learn about processes and guidelines.
How to steward well, shared by Chelsea Robinson, provides a great starting place for stewards and stewardees alike, and is especially useful in getting a new steward relationship started.
The stewarding system within Loomio is another good starting place if you want to learn about stewarding in practice.
Matchmaking happens in batches roughly once a year; if you're keen to jump in at this moment, though, you may be able to get connected with a steward if you ask in the Stewarding slack channel.