For learning Vietnamese language it is necessary to know alphabets in Vietnamese. You have to know alphabets in Vietnamese to learn writing in Vietnamese language. Vietnamese alphabets are the building blocks of Vietnamese language. There are 37 characters in Vietnamese alphabets. Vietnamese alphabets are made up of Vietnamese vowels and Vietnamese consonants. The Vietnamese alphabets contain 12 vowels and 21 consonants. Vietnamese vs German gives a comparison between Vietnamese and German alphabets.
Vietnamese script is also known as Vietnamese writing system or Vietnamese orthography. The set of visible signs used to represent units of Vietnamese language in a systematic way is called Vietnamese Script. The Vietnamese language uses Latin i.e. Vietnamese alphabets are derived from Latin script. The script decides the writing direction of the any language, hence the writing direction of Vietnamese is Not Available. Learn Vietnamese Greetings where you will find some interesting phrases.
Is Vietnamese hard to learn? The answer to this question is that it depends on one's native language. One should start learning Vietnamese language with Vietnamese alphabets and Vietnamese phonology.
Time taken to learn any language that is mentioned here is the approximate time required to learn specific language for the person who is proficient in English. You can also go through all Indian Languages and find if Vietnamese is one of the language of India.