From the site:
"The purpose of this site is to give elementary students of Indonesian the opportunity to practise and review basic vocabulary, grammar and sentence structures as they work through their course and prepare for the examination. Each unit contains a range of exercises of various types, including:
* Multiple-choice quizzes
* Gap-fill exercises
* Matching exercises
* Short-answer questions
* Word-ordering exercises
* Sentence-ordering exercises
All the exercises are interactive, so you can check your answers and get hints and feedback as you work."
This is a course that takes you through learning some initial vocabulary and practical use of Bahasa Indonesia.
The entire course is conducted in Indonesian, which might be daunting for some... but give it a try and you might find you like it!