As HTTPS is a must nowadays I decided a year a go to give it a try and got a certificate from startssl. The process at startssl took quite some time and was not that easy. With lets encrypt everything should be much easier and faster to setup – lets give it a try @ueberspace (my hoster).
There is a very good (German) tutorial directly from ueberspace for the whole process. Two minutes later everything was done and it worked! There is only one missing part. As the generated certificate is only valid for 90 days I created a little script which gets run every month – thanks to cron.