First, you need to choose a course and an institution in the UK that is recognized by the UK government as a licensed Tier 4 sponsor.
Check Visa Eligibility
Check if you meet the eligibility criteria for a UK student visa permit including proving your English language proficiency and having enough money to support yourself during your studies.
Apply to Your Chosen Institution
Apply and receive an unconditional offer from your chosen institution. This offer will be needed for your visa application.