How to travel from Laos to Vietnam?

I don't know how to travel from Laos to Vietnam: Is it true that I can travel by land through crossing borders from Vietnam to Laos without a visa ? What about from Laos to Vietnam? For crossing border and airplane? Do people from Laos need to get Vietnam visa?  Which way is better?

hop on the bus. ill post a link in a little while. but you will need a visa i think.

http://www.seat61.com/Laos.htm#Hanoi%20to%20Vientiane

have a look there

As a VN citizen, you don't need a visa to travel to any of those ASEAN countries, including Laos.
Just bring your PP with you and get it stamped at the immigration.