I greet all the members! As a new member I want you to help me and advise me in which coιν it would be the best choice to invest! Thank you all! 
BTC is best, ETH and litecoin are also doing very well. But first of all you should get familiar to all these by reading posts in different boards/forum. Bitcointalk is providing very extensive information. You should at-least spend 3 hours daily in reading about crypto-currency.