Floral Arranging Tips

How do I know how many flowers to order?
How do I care for the flowers?
I want to just tie the stems together. Can I?
I want my flowers to be in a ball shape. Can I?
What is "wiring" flowers and do I need to do it?
How do you make corsages and boutonnieres?
Anything special I need to know about Oasis?
Can I put flowers on a cake?
How do I know if the person I am marrying is the right one?