Onboarding new Wikipedians

Work by the editor engagement experiments team to get new registered Wikipedians to quickly become productive members of the community. Getting people up to speed in an organization or community is often called "onboarding".

Background
As a follow-up to our work improving the account creation user experience, we have decided to focus on increasing the number of registered accounts that contribute and reach the 10-edit milestone. There is more on that at our prioritization notes.

Rationale
There is little to no direction given to new registered users immediately after they join Wikipedia. For those who already know what they want to accomplish as editors, at least in the immediate future, this lack of onboarding is not necessarily an obstacle. However, we know that the majority of accounts registered never attempt or complete an edit.