Translation of indisponer

Robert wants to tell us not only about nature and its secrets but also about the ability of the human being to recognize what happens around us. We see only the nice side if we just read and do not analyze.
I bought a bottle of water and took a pause to regain my energy. Not long after that I descended again and looked for a cafe place near the central square. To my surprise I found a very modern place.
Let me understand further: If you go through the 'vocabulary builder' in the left menu and choose new lesson it works faster than when you get there through the list of all lessons? Did I get this right?