The first step in the development of small programs, you need to have a small program account, by this account you can manage your applet.
According https://developers.weixin.qq.com/miniprogram/dev/framework/quickstart/ apply process to apply account.
1. In a small program registration page fill in the information-mail, passwords, etc.
2. Log applet background , we can "Settings" menu - "Basic Settings" to see the applet AppID up. Account password is a small program to fill in the registration email and password.