Please find more information for a visa application at website http://visa.mofa.gov.vn/Homepage.aspx. Note that participants are not required for a visa application if they are citizen of countries in Viet Nam's visa exemption list. 


Also, please have other information for an e-visa application at http://e.vnexpress.net/news/travel-life/vietnam-launches-e-visas-for-visitors-from-40-countries-3533738.html.