Welcome @anna-beipa!
Enjoy Steemit, you can also go to busy.org and use that as a means to do your postings:
I fact you will be posting on the very same blockchain as the one you are posting on right here on steemit, but you have more possibillities to edit your postings, like using bold type etcetera.
There is also an Android app called eSteem which looks at the same information as well.
One tip: try to put a photo into every posting: it makes it much more attractive!
grtz, @vjbasil