I am going to take part in a seminar on D-modules and applications, the textbooks that will be used are :  [D-modules, Perverse Sheaves, and Representation Theory][1], [A Primer of Algebraic D-Modules ][2]


  [1]: http://www.springer.com/birkhauser/mathematics/book/978-0-8176-4363-8
  [2]: http://www.amazon.com/Algebraic-D-Modules-Mathematical-Society-Student/dp/0521559081
However, I am a beginner in this theory and I found hard to understand the main road in these books. 

Could you please suggest me some other textbooks that are easier or more intuitive? 

Thanks.