Last year I blogged about how I write blog posts. I don't really have anything to add to that, so here's some advice on how I read scientific papers - both the ones I read for my day job, and the ones I blog about.
If you read papers you need PubCrawler. It's free, and it's the best thing since PubMed, because it automatically searches PubMed for you and emails you the results. Second, you need a reference manager program. I use EndNote, but there are others, including various free ones. They're indispensable.