Good question. I can't handle YouTube videos, they do tend to be childish and focused more on being witty and graphically interesting than informative (for example, false Smerdis doesn't have enough sources to make a five minute video, and can be covered with "rival power centers propped up options"). I was drawn into history by good authors like Voltaire, Gibbon, and Will Durant who know how to write, text books and academic historians don't seem to have that prejudice. If doing Rome, check out Mary Beard, she gives a vibrant and factual narrative.