I want that only like 200 characters are shown of each article on my blog and that theres a “Read More” button or link that leads to the full article. how can I do this? I saw it many times on other blogs but have no clue how to do it myself.
Just a reminder:
We really need to have a link to your blog, starting with http://
If you are asking about a wp.ORG blog, our answers here in wp.COM may not be accurate.
And in this case, there are other ways to spit your content but the most customizable one is theme dependent.