I am from here and i can tell You one thing – we have it all ..
Travel in Europe transport :
Planes andships of course is main one , and in countries are trains and buses . Prices vary in all kind of range starting from 50cents till
Planes : visit airline hunter , best place to find lowest airfare
Ships : lots and lots locally price around 50 euro one way between countries
Trains : different south and east Europe trains are cheap : for one city to other for around 3 hour road time cost could be around 12 euro . In west past of Europe trains are much more expensive one way ticket for 2 hour road time can be around 30 euro .
Buses : More or less cheap . City buses till 2 euro per ticket , depends on country and county to county buses around 10 euro . If you get return then cheaper .
Safe travel :
In my opinion Europe is safe place to travel , people are very welcome and even if they have no idea what are you saying they will try to help you . In capital cities be more careful .
In all countries someone speaks English . There are signs and brochures in English . Information points everywhere . And if you feel helpless then just install in your phone Google translator
Where to stay : Hotels, hostels ,B & B or rent apartments if you are planning to stay bit longer.
Weather : From June till September very warm winters colder in north Europe having snow in south storms and lots of rain .