Open all the blue links on a Wikipedia article in tabs. When you are done, move to the next tab and repeat. After a while, you will have hundreds of tabs. Read

Open all the blue links on a Wikipedia article in tabs. When you are done, move to the next tab and repeat. After a while, you will have hundreds of tabs. Read them all and you will gain general knowledge on a subject that will be much better than if you were to read only the first article. That's only Wikipedia. I do the same things with forums, documentation, stackoverflow, etc.