Yeah welcome! I think you'll find Trisquel a pretty great distro as a freedom
lover.
There is not too much documentation available but most ubuntu guides will
work, just be careful if they suggest you install something outside of the
repos. (Also the quality of many ubuntu guides ... varies.)
Between debian and Trisquel in the family tree there's ubuntu which has
decided to use systemd. So probably it will also end up in Trisquel. However
new Trisquel versions are only released when ubuntu LTS versions come out so
it will be a little while and things might change.
