1. It's actually quite simple: you just have to tap what interests you.
2. You can use your fingers, but it is more hygienic to borrow a pen (see picture) at the cash register.
3. You can get the next picture or video by selecting the arrow on the right.
4. When you are back at the beginning, you can choose a different topic in the menu at the top.
Note: This PC has an open system so that you can research unhindered. Please handle it carefully. You can display a keyboard at the bottom left.