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The problem is that I tried to use markdown but half of it didn't function - like placing the pic on the side or in the middle, and such, so I ended up with the simples tand working solutions, but yes, I could add some titles to paragraphs.

That's the spirit! Markdown takes time to get used to. Fortunately, there are a number of online editors available for free so you can edit your post there first and then just paste them on Steemit when they're ready.

Thanks, would you be so kind to tell me which online editors are the most simple to use?

I actually don't use them because I have Markdown memorized, but just google them and click on the top searches.