Tricks With A 35mm I Need Some Help. I Really Want To Get Into Photography, But Have No Idea Where To Start, Any Tips Or Tricks?

I need some help. I really want to get into photography, but have no Idea where to start, Any tips or tricks? - tricks with a 35mm

I have a Canon QL FTb the '70 's fixed with 3 lens, 50mm, 35mm and 100mm. I also have an external flash for the camera. I understand that all the basic rules such as rule of thirds in composition. Aperture and exposure time to understand something, but I have no idea where to start. I have the camera manual and know that the basic functions. I do not know which settings are for the light well, is what the estimate, and that's a fact. Any help would be great