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Trading in forex, crypto or stock have a lot of risk and required good constant practice and experience. and this is why most forex and stock brokers have practice version known as demo or virtual account. However, as important as this practice account, it is yet to find its place in crypto exchanges. 
it is never advisable to practice trading with your money, though some find it hard to be serious practicing with virtual account. this is very true with some (close to )average traders. 
For people like this they sort for the broker with no deposit bonus. And some this no deposit bonus who are real, allow you to only make withdrawal of profit you made from the bonus( bonus is not withdraw-able but trade-able.  
Now for every newbie and average trader finding a way to learn crypto with some real cash...i got grate news for you. check out this:
http://upcoin.com/?ID=592aecff
while those who which to trade forex and binary , i have another cool stuff for you.
check this binary and forex broker with great offer. very reliable presently.
www.instaforex.com/?x=DGIVL