As you may already be aware, thanks to the internet, there is a seemingly endless number of resources available that you only need take the time and effort to make use of. There is a wealth of knowledge which we can draw upon; however there is a very real downside to having this much information available: you can get overwhelmed if you're not careful. Once you have been testing long enough and are familiar with the types of information that can be revealed, you will learn what is more valuable.
In my own experience, as well as with those I have mentored over the years, I have found that it takes a while to learn to identify useful information quickly. Typically, you will find yourself, as a beginner, gathering far more information than you will actually use, while possibly missing some items that don't appear to be of much use. As you...