I've created series of videos for my students to use during the lockdown/distance/learning year. You are welcome to check it out. I cover very basic stuff, but I cover them in detail. The link I provided is just to one of my video. You can browse the channel to find more. But seriously, online learning is no replacement for in-person learning when it comes to learning Revit. There are so many situations that you may run into as a beginner that you will need an in-person support. Once you get better at it, you can utilize Youtube or other online sources to answer specific question that you may have. Good luck