Bahasa Indonesia adalah bahasa yang cukup mudah, jika anda sudah belajar bahasa Jerman, misalnya, bahasa indonesia benar-benar mudah!
Indonesian is a very easy language to learn, there are no tenses and really almost no grammar, maybe only the prefixs can put off a little at first, but they are very logic:
1) menulis (to write)
2) penulis (writer)
3) tertulis (written, like written on something)
and most of all, the alphabet and pronunciation are like Italian or Spanish. Surely you can start speaking bahasa after a few weeks of study, and compared to many other asian languages you can just use your keyboard, since there are not special characters.