startup event Help

[sem]

I'm 24, unmarried, applied for a start-up event in silicon valley and got selected.
Now,
they are sending me invitation,
Expenses are on me.

1. Questions they will ask.
2. Papers i need to carry along.
3. How to give them confidence that I'll return?(which actually i will, no reason to get illegal)
4. Any other suggestions will be appreciated.

Thanks in advance.

[sem]

Senior members please help.

I'm 24, unmarried, applied for a start-up event in silicon valley and got selected.
Now,
they are sending me invitation,
Expenses are on me.

1. Questions they will ask.
2. Papers i need to carry along.
3. How to give them confidence that I'll return?(which actually i will, no reason to get illegal)
4. Any other suggestions will be appreciated.

Thanks in advance.

Senior members please help.

[raghvi]

I'm 24, unmarried, applied for a start-up event in silicon valley and got selected.
Now,
they are sending me invitation,
Expenses are on me.

1. Questions they will ask.
2. Papers i need to carry along.
3. How to give them confidence that I'll return?(which actually i will, no reason to get illegal)
4. Any other suggestions will be appreciated.

Thanks in advance.

1. http://www.immihelp.com/business-visa-b1-experiences/
2. https://www.immihelp.com/usa-busines...-requirements/
3. Few strong ties to home country include, family, strong and steady job and income, studies.

This is my opinion not legal advice.