First, I am not a professional photographer. I am a long time amateur. Unless stated otherwise, assume what I say is JUST MY OPINION.
I'll tell you what I believe and what I've have been told by those I trust but as always, think, reason and form your own conclusions.
Here you will find photography tips I have discovered by research, trial and error, and through watching youtube videos and thousands of really lousy images.
I highly recommend Tony and Chelsea Northrup's YouTube channel. They have tons of videos on photography from technical videos on how to change your camera's settings, to how to improve your photography. They are fun to watch. I also highly recommend Tony's book Stunning Digital Photography.
Other Youtube channels for Photography I recommend:
Thomas Heaton -Landscape Photography
Morton Hilmer -Wildlife (Morton is inspirational to watch. He enjoys photography so much it just pumps you up!)