where can I sign up for a tour of Europe?

And hello to you, yes there are now quite a lot of companies that provide services of this kind, so you could start by googling this point, and then, in case of failure and the forum would ask for help in case of failure. Of course, if you have already tried, but could not find anything interesting for yourself, I can recommend you to order individual tours and excursions here travelservice.group/ . The company has been working in this field for a long time and has already managed to recommend itself only from the best side. I hope that I was useful to you with my advice. Good luck with handling and ordering services!