Like other volumes of Menschen, it is practical, More Words and has started to introduce expressions which is more practical too for everyday life. Menschen is similar to other versions of other languages, such as Espresso (Italian), Interchange (Eng) and so many other versions, tries to teach everyday simple communication for those who would like to live, travel time to time, or even work in a foreign society and not the very basic and maybe difficult (by means of time taking) roots.
So reading easy texts, expressing yourself easily, and word in atmospheres which you do not need to speak technically or very language-base by these kinds of book is easily possible. But these methods have a goal, learn and live on the surface and just work as simple worker everywhere the language is necessary.
If someone is interested in learn more deeply by self study, reading literature or every genre his/herself love. It can be a door to minds curiosity of learning the roots which after a while it will be an addiction for curious book lovers.
However, Moment mal is a difficult choice to start, but Menschen is a better option. It is about all volumes of Menschen not just A2.1 So starting from the first one, A1.1, would be a nice start, but in some cases some people prefer to study next ones at the beginning.