The B1/2 is a visitor's visa which will allow you to go to the US specifically for the purpose of your travel – holiday, business or medial treatment. You will have to be able to support yourself during your stay in the US.
The US L1 Visa in a non-immigrant visa which enables companies with operations both in the US and abroad to transfer certain specialised employees into the US to manage an organisation or major function/division of the company for up to seven years.
The E-2 investor visa is for a national of a country with which the United States (U.S.) maintains a treaty of commerce and navigation who is coming to the U.S. to carry on substantial trade, including trade in services or technology, or to develop and direct the operations of an enterprise in which the national has invested, or is in the process of investing a substantial amount of capital.
The E-3 visa is a visa for Australian nationals to work in specialty occupations in the U.S. It has many advantages over the other types of working visas, including the ability for spouses of E-3 visa recipients to apply for work authorization.
The H-2B visa is a great way for people who want to enter into the U.S. temporarily and engage in non-agricultural employment which is seasonal, intermittent, a peak load need, or a one-time occurrence. Spouses and unmarried children under 21 years can enter the U.S. with the H-2B visa holder but they are do not have work rights in the U.S.
The H-1B Visa is the official and primary US working visa / permit available to people from all over the world. The H-1B visa program allows an employer to sponsor a foreign worker in the U.S. in a specialty occupation.
The United States welcomes foreign students to American language schools, high schools, universities and other institutions of higher education. Thousands of learning institutions are approved to accept foreign students as full time students. It is possible to change schools and universities while being on an F-1 Visa without leaving the country.
A J-1 visa is a non-immigrant visa issued by the United States to exchange visitors participating in programs that promote cultural exchange. Applicants must meet eligibility criteria and be sponsored either by a private sector or government program.