Visa is easy, but come prepared
Visas are easy to obtain in Vietnam, and there are varying rules for different nations. You can either receive a visa on arrival or an eVisa if you have an Indian passport. A visa on arrival is also available to nationals of more than 30 countries. People published a comprehensive guide on how to obtain a Vietnam visa using an Indian passport. The post includes a link to a website that contains all additional Visa country information.
Also, if you have a UK or US passport, you can travel in Vietnam for free for the first 15 days, after which you'll need to contact the embassy to renew your passport if you want to stay longer. Similarly, multiple entries are not permitted, and if you travel to other countries such as Cambodia or Thailand and wish to return, you must have the appropriate visa.