Translation of desarrollar

I congratulate you on your move to become a private Spanish teacher. People need to believe in you and the most important thing is that you need to believe in yourself. It won't be easy at the beginning.
Did you hear about the earthquake this morning in Greece. This is really terrible, I think that quite a few viligars lost their lifes and many more lost their homes. I am really sad for all of them.
The same day that I gave my last presentation about our pilot project I flew away. The first lag was NYC's airport John F. Kennedy. I left Europe after midnight and arrived there at five o'clock, more or less.