When clicking on a tutorial link, it asks you to save / close the current process so that the tutorial process can open. If we can't have concurrent processes, clicking on a link for a tutorial process should open a new instance of RapidMiner
while two instances of studios will mostly work, there are some things which you need to be aware of. So having a new instances started is sadly not an option for everyone.
The RapidMiner cloud offer solves this issue, because you can just open an new tab.