Hello All

I am a begginner in Ext 4 and Sencha. So much so that I am trying to make basic data grids using the same. I have downloaded the Ext 4 sdk. My problem is that I do not know which library js files to refer in any basic app. The sdk zip contains many js files. I do suspect that ext-all.js and few others may be mandatory. But it is at best a guess.
All the examples on the Sencha site show only js code snippet. I do not see any html script tag that can help me identify what to include. Please guide. There is a lot of confusion in my head. Everything is right in front of me and still when i paste the snippets, i see blank html pages simply because i am not importing the correct library file.