For learning Santali language it is necessary to know alphabets in Santali. You have to know alphabets in Santali to learn writing in Santali language. Santali alphabets are the building blocks of Santali language. There are 30 characters in Santali alphabets. Santali alphabets are made up of Santali vowels and Santali consonants. The Santali alphabets contain 6 vowels and 21 consonants. Santali vs German gives a comparison between Santali and German alphabets.
Santali script is also known as Santali writing system or Santali orthography. The set of visible signs used to represent units of Santali language in a systematic way is called Santali Script. The Santali language uses Bengali, Devanagari, Latin, Ol Chiki, Oriya i.e. Santali alphabets are derived from Bengali, Devanagari, Latin, Ol Chiki, Oriya script. The script decides the writing direction of the any language, hence the writing direction of Santali is Left-To-Right, Horizontal. Learn Santali Greetings where you will find some interesting phrases.
Is Santali hard to learn? The answer to this question is that it depends on one's native language. One should start learning Santali language with Santali alphabets and Santali 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 Santali is one of the language of India.