Rachel's channel is different because she really focuses on small nano tanks and low tech planted aquariums. She also runs a series every year on her trying to grow plants outside in a big tub for her business. Over 450 videos.
ADU Aquascaping -
This channel really focuses at how to aquascape your tank and it gives you a lot of
neat tips and tricks on it. Over 50 videos
This website is full of very useful information on nearly every aspect of taking care of a fish tank. It has a lot of different categories that you can explore.
This website doubles as an online store and a great ressource with a lot of information. This site also has information on saltwater fish, in case you want to learn about starting one of those as well.