The first step, is to decide what you want to write. Writing is a vast field. I say this as someone who has gone to public university and almost completed an entire degree in English. There are three different types of writing.
- Poetry
- Prose (storytelling)
- Rhetoric
I presume that you are looking to improve your writing in a business context. Unless we are writing advertising jingles for television or YouTube ads, we can safely disregard poetry. If you are put in the position of composing such work, my foremost suggestion is to find something that rhymes with your product name, and go from there. Consulting your nearest university library may be of use, as those institutions stock various theoretical treatises on poetry.
Taking a class on creative writing from your local community college is probably the most effective method to improve your poetry and prose skills. Writing workshops of any kind, hosted by a school or otherwise, are goldmines of information for improving your expertise for these forms. You badly need your work evaluated by a professional.
Prose is occasionally useful in business, as you sometimes need to tell a story of product development, business development, client success stories, and so on. For the story blog post, remember the three good elements of storytelling: 1. Beginning, 2. Middle (climax), and 3. Resolution. Each of those elements deserves its own header.
For the beginning of your story, your need to start with the problem. What problem is your product trying to solve? What problem is your business trying to solve? What problem are you trying to solve?
Then you need the pain. Why does this problem bother you? Why should your clients or customers be bothered by this problem?
For the middle, you need the journey of problem to resolution. What did you go through to solve this problem? What were all the failures that you went through? How did this journey and solution not turn out as you expected?
For the resolution, you need to introduce the product and explain how it solves the problem you mentioned in the intro.
Remembering prose is also really helpful for YouTube videos. If you're confused, I suggest watching some Casey Neistat videos to get an idea of how video storytelling is structured.
Finally, there is rhetoric. If you've ever written an academic essay, online your thesis statement is your title and the headers inside the post are your topic sentences. Taking any subject class in college in the humanities, particularly literature, will get you a lecture on writing an academic essay.
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But, what is a forum post?
The answer is, it depends. This forum post is rhetoric, because I am technically arguing for a method of improving writing that I believe to be superior to other methods. But not all forum posts are rhetoric. When I wrote my introduction post to the forum, it was a story of who I am and how I got here. Therein lies the problem: online writing blurs the boundaries between the three writing types. To make matters worse, we have an intuitive way of writing each of the types, which must be broken down individually and improved. Our minds blur the boundaries.
The first step is to recognize which of the three writing types that you're in. Are you making an argument? Rhetoric. Are you telling about what happened, an event or series of events? Prose. Are you writing a series of verses? Poetry.
Once you know what you're writing, then you can go to the top of this post and write what you need to.