New User Questions

Hello fellow language learners,

 I am a brand spankin' new user (beginner level) and had a couple of quick questions.

 I noticed that not all lessons (at least at my level -beginner) have a "The Fix" section. What is this section exactly? Also, I see that lessons are broken down into categories from beginner to advanced, yet there is an additional category called "Media" at first I thought it would be video shorts - now, after browsing, I am still not sure what it is, can anyone help a new guy out ? 

Thanks in advance,

Meir