Log into https://gitlab.cs.ttu.ee/ using your UNI-ID

on top right corner create a new project
choose blank project

assign your project a name
choose if you want it to be private or not
and create it

to upload your files click on the + button
and choose upload a file

for working with gitlab using the terminal
go to https://docs.gitlab.com/ee/gitlab-basics/start-using-git.html