Almost all colleges and universities will require you to pay an application fee. Attested photocopies of all your academic credentials such as mark sheets and certificates must be submitted with your application. An Educational Advising Center may provide an attestation service for a small fee. You will be required to bring both originals and photocopies for meticulous verification. Generally, institutions require a financial guarantee signed by your sponsor and a copy of your sponsor's bank statement.
Some colleges require more than one essay.
Essays are usually mandatory for scholarship applicants and graduate students. In the case of graduate applicants, usually one letter of recommendation from a recent employer is required along with two others from professors. Samples of creative work may even be required for those applying for admission to programs in the visual or performing arts. However, unless specifically asked, it is advisable not to send the originals as those items may be logistically difficult for the admissions committees to return to you. The cost of studying in the United States varies widely among universities, and the cost of living varies from location to location.