Find someone who already knows how to do what you want to do, and ask for help. See what instructional resources are on the Web that are actually helpful. You may have to pay for a course. But it is going to be up to you to qualify yourself to do the various kinds of work that are required, and you really ought to have more than one arrow in your quiver.
GOOD LUCK: It may be that nothing will help you. Publishers of all stripes, publishers of newspapers, of magazines, of books, of electronic sites, have fallen into a collective delusion that editing isn't all that important and can be sacrificed without consequences. There is no guarantee that you will escape being invited into an office and handed the envelope. You may need to take the measly severance and open that little bar you've always dreamed about. But if you are serious about the craft and about continuing to practice it, you will have to take more responsibility for your own career. I wish you well.