Problems retaining what I study

Recently this happened to me. I studied a good Oracle book by an
author some months ago. It was a tough read for me, took several weeks
to study, understand some important parts of the book.
   
I had emailed several queries to the author. He had responded to me
with his answers after 3 months. To my surprise, I found out that I
had forgotten my own questions to the extent that I could not even
understand them on the first pass in the response email. They looked
too technical for me. I spent quite a bit of time just on the replies
and my questions and then I was able to understand most of the
questions.
   
How do people who read lots of technical stuff remember and retain
what they read?
   
How many hours of reading do other DBAs put in per week and do others
have problems retaining what they read?
    
-- 
Thanks,
Ram.
--
http://www.freelists.org/webpage/oracle-l

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