Please see below links related to US visa application process.
1. US visa online application link ( DS160 )
2. US Visa fee payment / US visa Interview appointment
Few questions that commonly ask during Visa application.
1. Why do you want to go to the USA?
2. Have you been to the USA before?
3. Why do you plan to travel at this time?
4. Who are you going with to the USA?
5. Which places are you planning to visit?
6. How long do you plan to stay in the USA?
7. Can you stay for a shorter period of time?
8. How much do you think will it cost you to stay in the USA?
9. What do you do for a living?
10. How much do you earn for a living?
11. How will you finance your trip?
12. Do you have relatives in the USA?
13. Do you have friends in the USA?
14. What are their exact addresses?
15. (For visiting Relatives/ Friends) How long have they been living in the USA and what are their current status?
16. (For visiting Relatives/ Friends) Where are they working and what will you do during the office hours?
17. Do you have plans of working in the USA?
18. Have you already booked your plane tickets?
19. Have you traveled to other countries before?
20. How can you assure that you will come back home?
If you need any further information, please feel free to contact me
Thanks & regards,