Often learning items are offered in various languages in the library. Obviously a French-speaking colleague would be happy to follow courses in French. But if you do not speak French this can be confusing and, moreover, not relevant.
When you log in for the first time you will see a screen in which you can see the language or languages which you would like the courses in the library to be in. The selected languages will be prioritised both in the library and the discovery page and will always be shown first. A prerequisite is that learning items in at least two different languages are shown in the library.