Hotels, B&Bs, Apts.: venere.com
Hostel Guide: hostels.org
Hostels: hihostels.com
Hostels: hostelworld.com
Hostels: hostelz.com
Britrail: britrail.com
Eurail Pass: eurail.com
Rail Europe: raileurope.com
Railpass Information: railpass.com
Railpass and Hostels: eurotrip.com
Currency Exchange Rates: xe.net/ucc
Currency Exchange Rates: oanda.com
WorldStandards.com (worldwide electrical guide): worldstandards.eu/electricity/plugs-and-sockets
ISIC (Student ID Card): isic.org
Worldwide Metric Conversion: worldwidemetric.com/conversion-calculator.asp
Maps of Europe: viamichelin.com
GeoBlue: geobluestudents.com
Mobility International: miusa.org
Fodor’s Travel Guide Online: fodors.com
Let’s Go Travel Guide Online: letsgo.com
Lonely Planet Travel Guide Online: lonelyplanet.com
Rough Guides Travel Online: roughguides.com
Rick Steves’ Europe: ricksteves.com
Centers for Disease Control: cdc.gov/travel
Passport Information: travel.state.gov/passport/passport_1738.html
Foreign Entry Requirements: travel.state.gov/visa/americans
Embassy and Consulate Information: embassy.org
Travel Advisories: travel.state.gov/content/travel/en/traveladvisories/traveladvisories
Absentee Voting: fvap.gov
U.S. Consulates: www.usembassy.gov
U.S. Department of State: studentsabroad.state.gov
Student Universe: studentuniverse.com
ScholarTrip: scholartrip.com
Kayak: kayak.com
Expedia: expedia.com
Carbon Neutral: carbonneutral.com
Ethical Traveler: ethicaltraveler.org
Fair Trade Federation: fairtradefederation.org
Global Footprint Network: footprintnetwork.org/en/index.php/GFN
Sustainable Travel International: sustainabletravel.org
Go Green Travel Green: gogreentravelgreen.com