I'd say that if you want to write well, read good writers. There's different styles of writing, for different purposes. Entertainment, intellectual debate, ins

I'd say that if you want to write well, read good writers. There's different styles of writing, for different purposes. Entertainment, intellectual debate, instruction etc. You didn't say what you wanted to write about. What's a good writer? Well, someone who writes well, to your taste, and in your domain. Or if you want to write commercially, someone who is commercially successful; whether or not they write well, I suppose. For many purposes, a knowledge of logic and rhetoric is probably going to help. It's hard to say - you haven't given much away.