While you should not 100% trust anyone, it's worth to read blogs written by the others when you are doing your research as they are easier to understand and allow you get an idea quickly. However, do try to read the opinions on both sides (buy/sell) and do your own judgment. When you are digging deeper in this field, it's also worth to learn more about the technical aspects, and read whitepapers/ github codes by yourself. This will provide you greater insights in certain technologies/ new coins and you will be able to have better judgment. Most ppl don't read and just follow opinion leaders, and they will hardly be successful.