If you are looking for online photography courses, Udemy offers for a limited time a large variety of such courses with discount starting at €15.
Online videos and resources are availiable, for you to watch and read at your own computer, at your own free time and at your time schedule according your comletion plan.
You can start with the basic of digital photography and how you can use your camera if you are a beginner, or discover more advanced courses of photoshop tips, composition, black & white photography, street photography, food photography, night shooting, landscapes, wedding photography or creative photography.
Before you get the course, you can watch a summary of the lessons that follow and if those lessons are indeed interest you. In addition, the courses you choose remain at your availiability online so you can watch them again any time you choose. This means you create an online personal library of knowledge about your favorite hobby.
I have used many times in the past Udemy and I am very pleased with the courses it offers.