We can trade BTC and Altcoins too.But which is the best for trading Alt or BTC.Please let me know any one with any Idea related to experience.

Actually i think both Bitcoin and Altcoin are good for trading. Among them Bitcoin is the best for trading . We know that Now, Bitcoin is the world best cryptocurrency. It is so much secure and trust able. Many people are engaged with Bitcoin. Bitcoin trading is so much profit able. I am also try to regular trading of Bitcoin. I am a trading lover.
One thing which I would like to add into this is that bitcoin trading is a full time job and its not some part time thing, if you want to enter into the trading side than be assure that you have the confidence and you are the master, because I am afraid that many people who are not good at trading or trying to this as a part time thing, they will loose the amount and later on they will blame the process.
Also I want to clear that I do not want to discourage anyone but I also dont want that anyone should loose a penny because of some innocent mistake.
Yeah; and it is because in bitcoin trading you will have to remain active all the time as anything can happen any time with bitcoin, in investing you will not have to go and check the market price all the time but trading will make you worried as much as it is risky the same way bitcoin is profitable as well. It is good to make fine research about bitcoin before you get in bitcoin trading because it will lessen the chance of risk in trading all the time go for long term trading not the day trading,, this is good to guide new user of bitcoin so small and minor mistakes will not cause the huge danger for them.