Question about reading standard paper

[wereiyou]

I am an elementary EE.
When I am reading a standard paper, which section should I pay more attention to? I am now reading to standard of PCI Express, it's so dull and I can't get the key point. Sometimes I even wanted to give up.

 

[invent]

Sometimes it helps to seach on the internet for lecture notes on the subject. If these lecture notes on the particular subject exists, is will usually be short, straigth to the point and have more diagrams .
They are usually much easier to understand and provide the foundation before going on to your information rich standard papers.