TITLE: What books should I read before beginning Masaki Kashiwara and Pierre Schapira's "Sheaves on Manifolds"
QUESTION [15 upvotes]: I am a beginner trying to learn about sheaves. I am trying to read Masaki Kashiwara and Pierre Schapira's book "Sheaves on Manifolds", but I find it is not easy for me to understand.
What other books should I read first, with little knowledge about abstract algebra and homological algebra?

REPLY [3 votes]: I like: Iversen, Cohomology of sheaves
http://books.google.com/books?id=JTAZAQAAIAAJ&dq=Iversen+Cohomology&hl=en&ei=gScvTO6_JpqqsQaquL21Ag&sa=X&oi=book_result&ct=result&resnum=10&ved=0CFIQ6AEwCQ
It serves as an introduction to sheaves and their cohomology without requireing 
much background. Applications to topology and algebraic geometry are
explained. Morover it has an appendix on derived categories.

REPLY [3 votes]: I think, the first volume of Harder's Lectures on Algebraic Geometry contains a nice and balanced account of sheaf theory and the cohomology of sheaves. Besides the title, it is not really a book about algebraic geometry. Instead there are many examples from algebraic topology and Riemann surfaces. One should although note that the book contains many typos.