From DSC:
I thought this was a really good idea from Dan Pontefact: “Why Experienced Employees Should Write Letters to New Team Members”

Excerpt:

Regardless of their age, an individual who is fresh to the team is given between five and ten pieces of advice from a more seasoned employee in the form of an email or letter. These tidbits of knowledge are what these seasoned professionals wish they had known when they first joined.

This is more than just a welcome; it’s a guide, a primer, offering an insider’s view of the organization and fostering a sense of camaraderie from the very beginning.