I am still new to building and managing the sales department but it is something I have to learn on the go. Where can I find some good educational materials?

It happens way more often than you may immagine. And learning from the practice isn't the worst thing that may happen. Of course, there's a chance that you will make otherwise easily-avodable mistakes and ruin everything, but still... Jokes aside there's one website I can share here. Here, check this link here https://revenuegrid.com/blog/salesforce-pipeline-inspection/ . And be sure to go through other blog posts there as well.