I recommend you two things: 1. Quit trading binary options, it is a scam. 2. Try read the fundamentals in Babypips
For trading capital, it is dependent upon the individual trader. But for a newbie would better trading with small capital first or trading with no deposit. Because the conditions of actual accounts and demo accounts is quite different
Http://www.babypips.com/ you will find the answers to the and the rest of the questions you will be struggeling about in the next months there... have fun! Btw: that is my 100th post at FF