So to start one more time from basics :)

What are jobs there that potentially available, what they requirements and what we can do here?

Fist industry that I wanted to cover or at least take a better look is BANKING. Here we go...

There are two major different bank types- COMMERCIAL and INVESTMENT. Most of the banks today is a mixture of both of them with dominant of one or another. What is the difference then?

Commercial bank is what we usually think about when talk about bank. Here you can get loan or open deposit account, pay your bills or exchange/transfer money.

Investment bank instead of interacting with people/business directly and lending them money it helps people/business to raise money from other firms through bonds, stocks, etc.

Work in investment bank divides on three main categories:
- Investment banking or everything that brings money (merge and acquisitions, underwriting, asset management, trading (stocks, bonds, etc), global transaction banking)
- Analyze team or everything that research/analyze/predict behaviour of the market– risk management, financial control, research, corporate strategy
- Back office or support – operations (providing support of all operations of investment bank), technology (IT development), and administrations.

For commercial bank it is two main divisions:
- Front office – it is where interaction with client and engagement of new ones happens
- Bank office – it is where operations of front office are supported and laterally coming to life!