Be an active reader
Most of us read any book as if we are watching news. We just wait for things to happen. If you compare that with the way in which you watch a movie, you will see the difference. While watching a movie quite a few of us try to predict the next dialogue. That does not happen when we are reading. Typically well written passages give us a chance to understand the argument and reach the conclusion along with the author. So the next time you are reading remember that this is not a TV soap but a book.
Understanding vs Speed
Separate the wheat from the chaff.
This is basically the ability to distinguish sentences which are important from sentences, which are too general. If a passage is talking about angiography and then there is an example provided on it then you don’t need to spend a lot of time with that sentence to understand the example. Hence while reading, keep an eye open for redundant sentences. Recognizing them and zipping through them will definitely save time.
Lend Structure, Don’t understand
There are a lot of schools of thoughts on how you should read a passage and answer questions. Some think you should read the questions first and then look for the answers; others feel you should read the passage thoroughly and then answer all the questions without looking back. We all know that there are two types of questions, direct and indirect. If you have read through the passage completely with in-depth understanding, then you may be able to answer all questions correctly. If you read through the passage once with cursory understanding then you should be able to answer all main idea questions. You will mostly need to refer to the passage again for detail / direct questions. I personally prefer the latter; there is no point in spending huge amounts of time in understanding passages completely.
An appendix of topics tested with websites:
http://www.firstscience.com/site/archive.asp
http://www.sciam.com/
http://www.sciencedaily.com/
Religion/Mythology
http://www.buzzle.com/chapters/archives-238.asp
http://www.religion-online.org/
Philosophy
http://www.essortment.com/in/Philosophy.General/index.htm
http://www.prs-ltsn.leeds.ac.uk/philosophy/articles/index.html
Psychology
http://www.uncommon-knowledge.co.uk/psychology.html
http://www.articlesfactory.com/articles/psychology.html
Sociology
http://soc.sagepub.com/reports/mfr1.dtl
http://www.aboutsociology.com/sociology/List_of_sociology_topics
Literature
http://www.essortment.com/in/Literature.General/index.htm
http://www.buzzle.com/chapters/archives-251.asp
History
http://www.historynet.com/
http://www.essortment.com/in/History.Events/index.htm
Politics
http://www.magportal.com/c/soc/intl/
http://www.buzzle.com/chapters/archives-234.asp
Geography
http://geography.about.com/cs/a.htm
http://www.ezgeography.com/
Economics
http://economics.about.com/cs/a.htm
http://www.europe-economics.com/pubs/articles.htm
Management
http://www.magportal.com/c/bus/strat/
http://www.see.ed.ac.uk/~gerard/Management/