Thinking of starting content creation. How can I start?

Thinking of starting content. Was thinking of doing informational history videos and explaining lessons. Kind of a side hobby because history has caught my eye recently. Eventually when I go to med school I hope to make med school content but right now I think I want to start with that. Fellow content creators, any ideas on how I can get started? Part of me is afraid of what family will say to me but I have to get over that fear. Wondering if yall dealt with the same. Also tips on growing? I know I have to be consistent before I start seeing a lot of results and establishing a community around my channel.