Hi Victoria,
Congratulations on your new position! Most of what I've learned about library instruction in History, especially for primary sources, has been from fellow librarians and their excellent libguides and websites. Most are very willing to let you use and repurpose their content. Just check with them first. Below are a few sites that I've found particularly useful.
If you have other more specific questions or if you'd like to set up a time to chat, I'd be happy to do so. Feel free to contact me directly.
Best,
Rebecca
Rebecca Lloyd (pronouns: she/her/hers)
Incoming Convener, ACRL History Librarians Interest Group