CFA Level 1 Help

Hi friends i have schweser video of 2010 for level 1 and i am preparing through it . Please suggest me wheather i can go through it or i should have the latest one . Will there be any change in 2010 video as compared to 2012 video lectures.

Definitely from 2010 to 2012 Econ changed completely and a lot of subjects were taken to level 2 and a lot from level 2 were brought to level 1.