www.4avisa.com provides general information on travel visas.

An immigrant visa (lawful permanent residence) is a foreign national who has been granted the privilege of living and working permanently in the United States. Immigrant visas to the United States are divided into two categories: (I) those who may obtain permanent residence visa status without numerical limitation, and (II) those subject to an annual limitation. The latter category is further divided into (A) family-sponsored, (B) employment-based. 

H1-B visas are temporary employment based visas. The most common H1-B visa is the specialty occupation visa. This H1-B visa requires that the immigrant have at minimum a bachelor’s degree or an equivalent in a field related to the occupation for which they are being petitioned. . All the 100% proven and trusted services for more available H1-B jobs and more H1-B visa sponsors and more ways to help you succeed