Learn the basic tips and tricks
And learn the many ways to compose a picture
The truth is that if you want to put the time to learn the basics you also should spend around $10 and get a book. Free online content is terrible these days, dominated by list of x things and poorly put together content to generate ad revenue.
See the options of e-books available at Amazon. They are quite a few, from novice to more advanced. Read the reviews and choose what fits you.