"Invest only what you are afford to loose."
This was the first advice I had got from my teacher and will tell the same thing to everyone whose trying to start trading in any manner.
Or invest only what you have now. I've seen some people in here asking and seeking for advice if they can just sell their belongings like a valuable ring, house and even property. I never think of trading to be this obsessive. The first thing to have before entering the trading, you must have a capital either big or small it does not matter, as long as you are ready to lose it and so selling things just to risk with trading is wrong for me, unless if you are millionaire.
Go with your instincts. Logic is not perfect.
I don't seen any logic in trading, if it has it is only the noticeable ones. Instinct is good but it will be just only based on your knowledge towards the market so basically knowledge is a must to possess of a trader in order to succeed.