This comment perfectly explains why Brexit has left the UK's young feeling so devastated

[angrychair]

18. It is very hard

For non-EU members to travel, much less work, in EU nations. You have to apply for a visa to travel, which cost money and takes time.
Right now a British citizen gets on a train and travels to Italy just like you, for the most part, would going from FL to NY.

Now?

That person will need a entry and exit visas and other paperwork for every country he is traveling through to get to Italy. Just traveling became dramatically more complicated and expensive than it was yesterday.

Working and living in another EU nation?

Right now they are free to travel to, go to school (often for free or near-free as EU citizens) and get a job in any EU nation.

As a non-EU nation?

No. Apply for a work visa, you have to have a job skill they need or have a shortage. You have to prove a specific competence in the host nation's native language and prove a means to support yourself.
You will now have to pay non-EU resident rates for taxes and going to universities.

Any British citizens going to college or wanting to go to college in a EU nation is about to become very disappointed and pay a significant amount more money.