My Studies {words in titles are capitalized, except for articles and prepositions}

I'm graduated with a degree in video editing since in 2011. I was in a cinema school* in Belgium for two years and now, I'm in University of Lorraine since for one year : I'm studying cinema. In September, I'll begin a master's degree. This year, my favorite course was about the cultural press. The teacher was very exciting and funny at the same time. Thanks to him, I discovered Pierre Bourdieu's and Pierre Carles's pictures. Pierre Carles shows in his films how the medias*** and politicians are linked.

*It's more commonly called either "film school" (for technique) or "cinema studies" (for film theory).

**Media is already plural, so no 's' required. (The singular form is "medium").

My studies

I'm graduated with a degree in video editing since in 2011. I was in at a cinema school in Belgium for two years and now after that I spent one year at University of Lorraine. I studied cinema. In September, I'll begin (start, but more often take up) take up a master's degree. This year, my favourite course was about the cultural press. The teacher was very exciting and funny at the same time. Thanks to him, I have discovered Pierre Bourdieu and Pierre Carles pictures. Pierre Carles' films show  how the medias and politicians are linked.

My studies

I recieved my degree in video editing in 2011 from a cinema school in Belgium. This past year, I've studied cinema the University of Lorraine (any particular phase of cinema?). In September, I'll begin a master's degree. This year, my favorite course was about the cultural press. The teacher was very exciting and funny at the same time. Thanks to him, I discovered Pierre Bourdieu and Pierre Carles pictures. In his films Pierre Carles shows how the media and politicians are linked.  // Note: Your text is correct and interesting. I just tightened it up with maybe an American 'slant' to it. But this only works, if you like the changes. Thank you.