Coursera is a web site that runs many free and paid-for online courses. These are often run by universities, both American and of other countries. Typically they can take 2 or 3 hours a week and go on for 3, 5, 6 or more weeks. One that might interest you is…
Photography Basics and Beyond: From Smartphone to DSLR Specialization
It has 5 modules starting with the very basic instruction upwards. You don’t have to start at the beginning, you can “enrol” straight into any one of the modules. For instance module 3 is The Principles of Photo Composition and Digital Image Post-Production. This module is 4 weeks long at a suggested 2 to 3 hours per week.
This is a free course if you only watch the video lectures, or you can pay (rather a steep £39 / month) to get more interactivity, e.g. quizzes and forums. They offer a 7-day free trial to the full course and videos but I opted for just the free video lectures.
To get access to just the free videos which can be watched online or downloaded: Open a free account on Coursera. Click the ENROLL button for the module that interests you. You will get a form that encourages you to sign up for the 7-day trial but just click the “AUDIT ONLY” link at the bottom of this window to get straight into the module’s videos with no further ado.
If these modules are not advanced enough for you search around in Coursera for modules that might be of more interest.