* added courses on free-course-en

* added some courses on free-course-en

* add author
Co-authored-by: NDavid Ordás <3125580+davorpa@users.noreply.github.com>

* change to playlist
Co-authored-by: NDavid Ordás <3125580+davorpa@users.noreply.github.com>

* add author
Co-authored-by: NDavid Ordás <3125580+davorpa@users.noreply.github.com>

* add authors
Co-authored-by: NDavid Ordás <3125580+davorpa@users.noreply.github.com>

* Update courses/free-courses-en.md
Co-authored-by: NDavid Ordás <3125580+davorpa@users.noreply.github.com>

* complete title
Co-authored-by: NDavid Ordás <3125580+davorpa@users.noreply.github.com>

* alphabetize
Co-authored-by: NEric Hellman <eric@hellman.net>
Co-authored-by: NDavid Ordás <3125580+davorpa@users.noreply.github.com>