Cant figure out how to use jekyll

So I’m trying to learn how to use jekyll to host a website.
Im unsure if i have to use ubuntu or just command prompt with ruby for this to start with?
Anyway i used command prompt with ruby.
I typed in
gem install jekyll bundler
jekyll new projekt
then i tried
cd projekt
and then it doesn’t work.
I’m very new to this, since i have only somewhat learned html, and wanted to put my skills to the test, and see if i could actually make something.
Please help a newcomer to the coding community.

Hi @goldenr3ck3r,

What error message do you get? Do you have Ruby installed on your system?