Hi, if you are interested to learn about immigration and visas to UK, so please visit https://www.gov.uk/government/organisations/ho-office visit and https://www.gov.uk/browse/visas-immigration, you can find everything on these sites. You can find all information related to UK immigration on the links above.
If you are interested to work and live in the UK, United Kingdom please visit so i suggest that you https://www.gov.uk/browse/visas-immigration/work-Visas, this is a Useful websites where you can find everything about UK Visas Work.
Useful Links There are so many things i can share with you.
1 Tier 2 Visa sponsorship
The 2-sportsperson https://www.gov.uk/ti-worker-visa
2 Tier 5 Temporary Worker, Charity Workers Category,
3 Domestic Workers in a Private household Visa categor
4 to Tier 1 Entrepreneur Category.
Please let me know if you need more help or please write your comments, and i will be more happy to assist you.