Lady Texan mentioned "Understanding the dementia experience". I am not able to post a link here, but if you go to alzconnected, you can search for the title. The link should show up.
She also mentioned videos by Teepa Snow. You can find her videos on youtube if you search for them. Another one I really like is "Careblazers", and you can find that by searching youtube too. Both of these women are excellent teachers, and they can give you a lot of great tips.