For learning Sundanese language it is necessary to know alphabets in Sundanese. You have to know alphabets in Sundanese to learn writing in Sundanese language. Sundanese alphabets are the building blocks of Sundanese language. There are Not Available characters in Sundanese alphabets. Sundanese alphabets are made up of Sundanese vowels and Sundanese consonants. The Sundanese alphabets contain 5 vowels and 16 consonants. Sundanese vs German gives a comparison between Sundanese and German alphabets.
Sundanese script is also known as Sundanese writing system or Sundanese orthography. The set of visible signs used to represent units of Sundanese language in a systematic way is called Sundanese Script. The Sundanese language uses Latin, Sundanese i.e. Sundanese alphabets are derived from Latin, Sundanese script. The script decides the writing direction of the any language, hence the writing direction of Sundanese is Left-To-Right, Horizontal. Learn Sundanese Greetings where you will find some interesting phrases.
Is Sundanese hard to learn? The answer to this question is that it depends on one's native language. One should start learning Sundanese language with Sundanese alphabets and Sundanese 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 Sundanese is one of the language of India.