Re: The Signal to Start Trading and the Signal to Close Trading
ndicators are only for giving a general idea about the market movement and not for accurately predicting the movement. Moreover, technical analysis is a pseudo-science and is more or less correct in 50-50 cases because a lot of factors are involved here.
Indicators are actually helping in prediction to know the direction the market will go, either up or down, but there are sometimes that indicators may fail, there are sometimes you may think the indicator failed to give you the right prediction, but later the market will correct itself to the direction the indicators are pointing to. I have used indicators and they work successfully. What I prefer is the long term game for buying low and selling high. In between, just hold, dont look at the market prices and panic - get involved in some other stuff in life 
When the market bounces back you have your chance again. But very little use of indicators would be needed for this. The major use of indicators is in day-trading and that too ends up being a gamble.
So if you want to stay with the advantage in your hands, better to stick to long term trading and use indicators will a bag of salt.
Long term is the best, let the market fall, buy and wait and sell when the market has risen, but again when the market fall. No indicator is needed for this but some professionals use indicators too like the SMA. When the market bounces back you have your chance again. But very little use of indicators would be needed for this. The major use of indicators is in day-trading and that too ends up being a gamble.
So if you want to stay with the advantage in your hands, better to stick to long term trading and use indicators will a bag of salt.