Taxation procedure

HI All,

I have 3 questions.

1. What are the complete list of taxes applied to all the small e-commerce websites.

2. What is the complete process to start a ecommece website.

3. If a e-commerce website takes commission for the service he offered. How will the service tax be calculated.

For an example, i provide a resturant voucher for rs 300 on my website, and I earn a commsion of 10 % from the resturant merchant. So what will be my service tax.

will it be 300 * 14% = 42  or will it be (300*10%) -14% =4.2

I request you to help me.

Thanks