Complex sentence: George began his career in 2007 making short films on his dad's phone the purchased his first camera in 2008, he then proceeded to experiment in short film while rapidly growing his knowledge and understanding of the film industry and the way it works.
Split into simpler sentences: George began his career in 2007 making short films on his dad's phone then purchased his first camera in 2008. He then proceeded to experiment in short films while rapidly growing his knowledge and understanding of the film industry and the way it works.