While the search function on GreekChat isn't the greatest, I urge you to take some time to read some of the discussions here, especially those in the recruitment forum, before posting away.

Your question's been answered 239048230498234 times because it's already been asked by 239048230498234 people before you.

Your question's very general and vague, and chances are the answers you'll get here will also be general and vague. You might just get specific answers if you read the threads.