SQL

Python or Java is the most demanding coding language in today's world.

It depends on your interest. If you are highly interested in coding then go with Java, otherwise, go with SQL.

It totally depends on your interests. Most popular and widely used languages are C and Python and they are getting their momentum back in the market. SQL is an easy language which can be learned easily and PHP is for server-side scripting for web development.

Go for HP, APTECH or NIIT. They have good staff and they provide enough resources for practical. Also, just don't try to learn every possible language and try to learn just one or two but with excellence. That will really help shaping your career. Once u get grasp of one language, learning a new language is just learning the syntaxes, rest all follow same logic.

You can learn database administration and programming on websites as well as via video lectures. You should pursue B.Tech in computer science. In CSE, you will learn all about programming and database, data structures, etc.

You should do SQL it would be better after completion in specialisation in Oracle.