I was terrified the first time I went to Europe...and I booked my own travel and went by myself. I know how scary it can be. But everything turned out just fine. Everyone in airports and everything were super helpful. A lot of people speak English, and if you get lost it's usually pretty easy to find someone that can help you, especially at hotels, train / buss stations and the like.

As for the money worries if you have a band debit card with a chip and a visa logo you can use that anywhere in Europe and not have to worry about cash. Just call or go to your bank before leaving to alert them you'll be going to Europe and what countries so they won't flag anything as unusual activity. Also ask if they charge a fee for international use. They usually do but with exchange rates and everything you don't end up paying that much extra for debit card and it's worth it not to have to deal with exchanging cash.

I've become a pro at all this since moving to Europe so if you have any other specific questions or worries I am more than happy to help toe best of my ability.

I totally know how overwhelming this can be. But things will be ok and it will be easier than you think. Hugs.