The easiest USA visa to obtain is one that is strictly designated for business or travel. If you intend to do both during your time in the United States it is best to be sure that you include that information on your application. Depending on which country you reside in it is also best to check U.S. Embassy appointment wait times before you begin your travel plans.
Once you are sure that you have an approximate time that it will take to get an appointment with your local U.S. Embassy you are ready to submit an application. In almost all cases you can submit your application online through the U.S. Embassy website. When you complete your application you will want to print out your confirmation page to bring with you to your appointment. You will also need to upload a picture of yourself before your appointment so the application can be matched with you.
Schedule your appointment to meet with officials at the embassy as soon as you submit your application. This will reduce the chances that your appointment could be postponed past the date that you wish to travel. Also be sure to review the instructions that are provided to you online. In some cases you will want to book your trip and bring proof with you, but in others they will recommend that you wait for approval. This can depend on a number of factors including international relations between the country you reside and the United States.
In most cases a USA visa is rather easy to obtain as long as you do not have a criminal record and are not associated with any terrorist organizations. The United States is proud to allow people from other countries to visit the country and enjoy what it has to offer. Just be sure that you follow the instructions each step of the way to have the best possible experience.