How to autostart the classic snap

Hi, I am pretty new to snap and ubuntuone etc.
I managed to get ubuntu-one on my raspberry and classic (snap) installed, after that, I am more comfortable with installing and getting things done. Thus, my pi is working as expected, but only after starting the class snap manually through the ssh connection.
What I am hoping to achieve is that the classic snap can be started automatically once the pi gets power.
But my problems already start with finding documentation on ubuntuone and how it is working, then I also didn’t find any documentation on the classic snap. It seems I am too old and missed the way of thinking on how to get to this information… Thus, I am not even sure if this is the right place to ask this question … Sorry for that.
Any help is much appreciated.
Thanks in advance.