You can get Visa for Vietnam by applying through online or personally going to Embassy. Online Procedure is best way. You need to apply online, submit online fees, after 2 working days you get “Visa Approval Letter” on your Email. You need two recent, identical, 2 passport type photographs with visa approval letter, along with your passport.
When you arrive the Destination Airport, show your Visa Approval letter with Photographs and stamping fee with entry-exit form at Immigration Office. There you get your Visa Stamped.