Remember that you have only two years from the point of you visa issued until it will be revoked. My gran could not face moving to Another Country so soon, please be careful what you apply for.
Tier 1 dependent visa's are visa's for family members to stay in or come to the UK. The person they are applying under must have a post-study worker visa in the UK.
It is extremely difficult to convert from a visitors visa to any other kind of visa. The best situation would be to apply for a dependent on your student visa and then your wife can accompany you. www.bia.gov.uk should answer some questions.
An elderly dependent in most cases is a relative such as a parent or grandparent. The elderly dependent must be over the age of 65 and live full time with the person claiming them as a dependent.
No, a UK visa is only valid for the UK. You need a "Schengen visa" for Switzerland.
£810 but goes up often. http://www.ukvisas.gov.uk/en/howtoapply/visafees/visafeessettlement
Are you seeking a visitor visa for the UK?
No need for a visa, as the UK is a participant in the Visa Waiver Program.
I once traveled to Switzerland on my UK visa.
No. Northern Ireland is part of the UK, so the visa will cover it.
No, individuals with a Schengen visa cannot enter the UK. The UK is not part of the Schengen Area, so a separate visa is required to enter the UK.
You can establish your own business in the UK if you have the UK work visa.
No, you cannot visit the USA with a UK student visa.