Cancel open MT4 Accounts

Beginner Questions
1

I would like to start with a clean slate. Is it possible to cancel my current accounts with MT4 and start over again? If so, how is this done?

Thanks

2

I presume you are demo trading… some brokers only give you one account every 30 days, some unlimited (IBFX).

Just goto file/open an account (upper LH corner)… fill out the rest