I remember there is a VB6 tutorial website (content no longer available) vb6.us where each of its tutorial has a label or badge stated the difficulty level. Eg. 1 star for Beginner, 2 stars for Intermediate and 3 for Advanced. Some blog also written how long is the estimate reading time. This would give the learner or reader expectations of the article. It is also useful to mention the prerequisite or one need to have prior knowledge working on some concepts such as SQL or HTML. I am aware that these ideas take more time. This is just a suggestion for structuring the tutorial and it’s optional.