You can follow the below given link.
https://academy.mendix.com/link/paths/82/Crash-Course
to get aquinted with mendix faster.
For the best quick start in Mendix, download the BaseApplication. This app is ready for use as soon as you start it. Contains several often-needed entities, lots of often-used functions. It contains the most commonly used marketplace modules and widgets and then some, and is of high quality. It is built in the latest LTS-version 9.12.5.
Using this app is a great way to learn the inner workings of Mendix and to start programming and adding your needs right of the bat.