Hello Rosa,
You are welcome; it is my pleasure to try and help the earnest seeker of a career in analysis!
Regarding age limit...the investment business is always driven by talented individuals that can help earn money for their investors/shareholders. So long as you can do that and to demonstrate it then that is the most important thing possible. I have seen young analysts in their late 20s get their first position, and others getting their first position in their mid-40s. I think if your goal is to become a portfolio manager then the sooner, the better, just because it takes many years to establish credibility within an investment firm.
Yours, in service,
Jason