Visa for International Students
Tier 4 is part of a points-based system for immigration. It is for migrants who want to study in the UK.
If you know the Tier 4 (General) requirements and you want to make an application, you can go directly to the UKVI website, www.gov.uk/government/organisations/uk-visas-and-immigration
Depending on your nationality and circumstances, you may be able to study in the UK without needing to apply under Tier 4 (General) as an adult student. However, your ability to work while you are studying here may be restricted.