Write -> give other people for proofreading -> rewrite -> publish -> gather feedback. There is no other way than practice. Feedback speeds up this learning process a lot and improves the result significantly. Everything else varies from person to person. Some write daily; some don't for months - then dive into their writing modes. Some start with an outline, and some - pour a stream of thoughts into the computer. Nev…
But other than that I agree. There are probably a few books worth reading but it's more about writing and getting good feedback. Past a certain point, you can probably dispense with some of that feedback depending on the nature of what you're writing. But it's essential to get started.