http://lymantravel.worldventuresdreamtrips.com

The exciting thing about our DreamTrips program is it gives you access to dozens of incredible trips every year at incredible prices.

Not only do you save money on every trip, but you have instant access to a community of fellow travelers every time you go!

Lonely Planet's website is quite good for letting you know if you need a visa for a certain country or not.
http://www.lonelyplanet.com/

But it's always best to check with the countries own website as some countries you will require a visa before you arrive there or sometimes you can get them on arrival.

Also if you have an older passpord you may require a visa before you arrive in the country if you passport is not machine readable.

Remember that Visa requirements can change quite quickly.

Depending in where you’re planning to go and what you have to do, take, spend, save or barter to get there, the Internet’s chockful of great resources to travel in the most effective and efficient manner possible. Check out a few of these sites or find your own that work best for your circumstances.

Expedia.com—This site offers flights, hotels and car rental rates for those needing an entire package. Also covers international travels.