At Coda, we've been using an onboarding guide for new hires since before I started! We've found it helps folks understand what's coming up and can help keep them on track.
In this doc you'll find a simple onboarding guide for new hires. To use this doc, just make a copy and fill out your company's information! There's a variety of sections to help new hires get oriented. These sections include:
Feel free to add/delete/modify sections that work for you and your team! Maybe you'd have a section on external vendors or tools your team uses or something else entirely! This doc is meant to be flexible to your company and its needs.