Novice question. I have a category with multiple sub-categories. I want display a selected number of words from the first element in each of the sub-categories as a teaser. Each teaser has a readmore link to a display of all the elements in each category. I also want to be able to style the output and/or limit the number of characters listed on the blog page. Also with a readmore to read full article. Can this be done with articles anywhere?
Yes, you can probably do that with Articles Anywhere.
number of words from the first element
What do you mean by first element? The first words of the category description? Or the first words of the first article in that category?
To display all sub-categories of category "Parent", with the title, the first 20 words and a link to that sub-category, you could do something like this with Articles Anywhere Pro: