Your enthusiasm to get into the busking world is amazing, and I would most definately encourage you to keep up your dedication. The busking world is an amazing place, where you can meet fascinating people, travel the globe, and meet fascinating people. It is so nice to meet someone who realizes what busking is actually about, and isn't just a David Blaine/ Criss Angel groupie.
I started magic at about the same age as you, and I started busking the streets when I was fifteen. Many people on this forum, including myself, argue that for the most part, 15 is too young to start busking, and kids should hold off until at the least 16, probably more likely 18. I started busking when I did in order to have pocket money (I never got allowance), and to help my parents out financially. Since then, I have at one point or anouther traveled through Europe and North America, and when I was 23 I got a 1 year gig on a cruise ship. When I started, I had a similar attitude to yours, eager to learn all of the tricks, and get out and make fat hats. Truth be told, the busking lifestyle is not nearly as glamourous as it appears you presume it to be, and before you make a stable income there is a long period of failor. In fact, some magicians, who've been performing since before I started, still can't make a living on the street. Working the street requires determination, a strong pain threshold (you're performing for 8-10 hours some days), and a love of entertainment.
Anyhow, enough about myself, you asked for help and suggestions.
In poker there's a phrase: play the man, not the cards. In busking, I use the phrase: play the crowd, not the tricks. As Paddy mentioned to a similar one of your questions in a previous post, it really doesn't matter what tricks you do: you earn money through how well you interact with the crowd. The success of a busking routine is 95% based on the entertainer, and 5% based on the tricks. As a result, what several people on this forum have been trying to tell you, and you haven't really yet understood, is that there is no such thing as "busking tricks": any trick that you love, and have a good routine for, can be transferred to the street.
The traditional busking routine has three parts: the begginning, the middle and the end. The begginning and the middle serve the soul purpose of building a nice crowd, and the end is the trick that makes people want to tip. The beginning and middle should be tricks that you are comfortable with, and can be stretched out or condensed depending on how your crowd is forming: a simple disapearing hankerchief, rope routine, or card trick are all simple ideas. The end should be impressive: this normaly entails either juggling, escape, linking rings, or cups and balls. This is where you need to make a decision: how will you close. Choose a closing and then work on refining it as much as possible. Read and watch as much as possible about that topic, and refine a routine that is truly impressive.
So a lot of your questions don't warrant answers: developing a routine is about self-reflexion as to what kind of career and personality you want to portray. When you decide what kind of close you want, let us know, and we can show you the right direction towards achieving greatness. Once you have a routine, hit the street and learn.
Where you start busking doesn't matter, anywhere with a good flow of people who are willing to stop and watch something interesting. If you get professional, you will probably have to migrate in the summer and winter to different locations, or work inside during the winter.
You'll learn a lot on the street about the street. I would also recommend watching other buskers, and consider investing in the following DVDs:
Cellini: Art of Street Performing
Peter Wardell: Crowd Puller
Don Driver: Building a Tip
Gazzo On Tour
As a general rule, any reference material on busking is worth getting. Even if there is only one thing in it that helps your show, it is worthwhile.
I hope this helps, Devyn, and I hope you understand why some of your questions don't have definitive answers.
Anyhow, it's 1pm Vancouver Time, and I need to head to my pitch.