Not a shill or a recommendation but I personally find http:[//simplywall.st](//simplywall.st) to be a good site to help me get a grip on fundamentals of companies I'm looking at. I wound up paying for a subscription and I think it's pretty much worth it.
Maybe intermediate is the best way to describe it? Doing a lot more research right now on strategies for selling options e.g. against blue chips / dividend champs. But honestly even a good source on basic options plays like how to use puts to hedge a long position most effectively. Figure there must be a lot of folks pouring in here from WSB who could also use some basic overviews, too, so a thread to whatever trade guides / sources people find useful may help?
On my end, one of the best *very basic* options overviews I've come across while googling myself is a schwab infographic: https://www.schwab.com/resource-center/insights/content/what-is-an-option-explanation-and-examples. Probably too basic but hopefully it will help a noob or two!
Will check out r/options, though--thanks for the tip!