How can I file for insolvency and what are the consequences?

I would like to file for insolvency. I need to understand how this will work.

I know insolvency means going bankrupt which means the individual truly has no money, but there is still a cost associated with the insolvency process.

I would therefore appreciate replies to the following questions:

1- What is the insolvency process?

2- How long does it take to complete the insolvency case?

3- Finally approximately how much it will cost in total (lawyer + court fees).