Welcome to PF!
In order to help you start out here, the following are the three main sections in PF. You should explore them well:
1. The main forums, that you see in the first page.
2. Insights Blog, available at the top row (header section). It contains articles that help in learning topics to a great extent.
3. The Videos, also available in the header section. The media gallery now has some great videos in almost every aspect in science, and they provide an audio-visual learning experience.
There us a section "Experiments" in the media gallery. As a teacher, I believe that it will be helpful to you, because a number of experiments about which we read in books, have been demonstrated there. It is helpful in teaching students. In fact, the media gallery, as a whole, can be used for teaching, if utilised properly.
With regards,
Wrichik.