Personally, I always read the first sentance of each paragraph closely and then skim the rest, looking for transition words, such as: however, because, in contrast, widely held belief, etc. I then take notes while I'm reading each paragraph, but I do not take detailed notes. I try and note the author's position and any kind of transitions, for example in the paragraph below:
However, until now, no one has ever suggested that microwave radiation might also be harmful. In preliminary labratory results, Cleary and Milham have found elevated growth rates in cancer cells exposed to low doses of microwaves. Cleary exposed cancer cells to levels of radiation that are commonly found in microwave ovens and found that the abnormal cells grew 30% faster than did unexposed cells. Milham's study focused on ham radio operators who are commonly exposed to levels of radiation slightly higher than those emitted by cellular telephones. He discovered elevated levels of myeloid leukemia.If that were the first paragraph in an RC question, my notes would look like this:
Before, microwaves not thought harmful, new evidence suggest otherwise. 2 studies, Cleary and Milham. Cleary - microwave ovens, Milham - ham radio operators
You can always go back and find the specific facts in the paragraph toanswer specific questions.