How I can obtain employment in the UK or in another country?

It is not easy. You can not just up and move. To get a job that is the hardest part.You have to to have a skill they need . You can look over their list of skills shortages, which I will provide links to.  

Have Skills

If you do not have one of those skills, you will have to find an employer willing to hire you, and they must demonstrate that they have published an advertisement for the post and could not hire anyone for a British or EU Nationals.  

In either case, the employer must apply for a work permit on their behalf, after which you can obtain a visa. You or your employer will pay for the visa, depending on the company.
 
Here are some links for you.

http://www.ukvisas.gov.uk/en/

http://www.skillclear.co.uk/index2.asp

http://www.ukba.homeoffice.gov.uk/workin…