Arabic first lessonis written in arabic, how to read that?

Different language, but essentially the same issue and recommendation.

Note that you don’t neccessarely need full immersion to learn a language (although it helps) and that LingQ isn’t a language teaching tool. It is a reader with some extra gimmicks aimed at language learners, most noticeable the “dictionary” you build up yourself while working through texts (what is refered here as LingQ’s).

You can try to work through the lesson trying to link the script to the audio, but I guess that doing some study on the alphabet and the phonetics as well as some basic grammar and syntax will easen the path for you, especially if the latter differs strongly from the languages you are already familiar with.