It has never been easier to find out the times of masses and the locations of churches. Your reliable friend is Google! (Other search engines are, of course, available!)
Just type in ‘Catholic churches in X‘, (ie the place you are visiting.)
You will probably be provided with a list of churches and a map. If you are lucky the website of each church will come up too, and that is where you will be able to check Mass times quickly and easily.
Many churches will provide you with the Sunday readings in English, but if they don’t then why not get the Universalis App. for your phone. It gives you the readings of the Mass for each day in English, and also the Order of Mass in English and in the major European languages as well as in some African and Indian languages. It is also, of course, a helpful spiritual resource for all year round.