Check in With the Team
Working at home has become commonplace enough that it no longer has the stigma — and suspicion that you're really marathoning a new video game — attached to it.
Your company probably uses a few communication tools, and most of them can be accessed easily from home. Email is still the main way to communicate, but there are also tools like Slack for quick convos. Some teams use shared environments like Google Docs, Google Drive or Dropbox, and some use shared project management tools like Asana and Trello.
You'll also want to get familiar with conference call tech, which often uses video. Skype and Zoom are two common apps. The key here goes back to our earlier tip: get dressed! You do not want to face your co-workers in a ratty old sweatshirt covered in cat hair. At least use what you might call the "work from home mullet": business up top, jammies on the bottom.