How do people celebrate the New Year in Russia?

Russian weekend? I have been listening to CD's to help learn the language, and I recently heard two expressions, на эти выходние and перед выходнини to mean "this weekend" and "before the weekend." The CD's come with no written material, and I am unable to find the words in my dictionary. Can someone tell me if I have spelled them correctly? Also, are these relatively new expressions? Thanks in advance for your answers.

I sometimes get confused about when I should use Нужен and not надо. Can someone help?

When should I say я имею rather than у меня?

Which of these words is more common in Russian conversation - теперь or сейчас?

Is слушаю still the correct way to answer the telephone?

Is the ruble still the unit of currency in Russia, or has it been replaced by the Euro?

How should the letters "ogo" in Russian words be pronounced? I have heard two different versions.