Most of Indonesian learners will use Indonesian in daily life. But they cannot write a commercial letter. This is because there is huge differences among commercial Indonesian and daily Indonesian. For example, words selections and tone are different. It is a difficult task to distinguish and apply them without guidance.

Daily Indonesian does not need to be formal. Words can be used without limitations. While commercial Indonesian needs to be polite and humble. Tone, words and content should be considered. Since it contains much knowledge, practices with professional guidance are required so as to make perfect.

All of us start to learn with passion in the beginning. But most of us lose our motivation after a period of time. Learning is boring, without study partners and encouragement, transportation time is long. There are thousands of reasons to explain why we stop our learning.

Regular commercial Indonesian causes a habit. A habit to push ourselves forward and a habit to remind us to learn. Flexible location and adjustable time of learning lowers the obstacles of learning.

Someone said we can learn commercial languages ourselves from textbooks. But there is not much people success. The reasons are it is difficult, if not impossible, to get our own mistakes and weaknesses.

Through face to face conversation, tutors can indicate our weaknesses. It improves our abilities to speak Indonesian, and speak more locally. Eventually, it makes our working effeiciency better.