Your local Library: Do not underestimate this resource. Programs, books, movies, audiobooks, interlibrary loan when they don’t have a book on hand. Some even have passes for museums and the like.
Youtube: It’s not just for funny cat videos anymore. Vsauce, Veritasium, CGP Grey, Vihart, minute physics, crash course
Pinterest: It’s full of DIY tips, including education. Lots of hands on projects, and resources.
Two great articles listing some great online course sites, and book sites.