Your title is not correct, it should be: For you learning bahasa indonesia or For you learning a language Short sentence or: for you who are learning ..... a bahasa is not write if you speak about a language in general you have to write it in English, if you are speaking of bahasa as indonesian language then you could write: in learning bahasa (not formal). Yes I find it difficult in the structure of the sentence and to go from the root word to ......