which bitcoin trading platform is easy and reliable
For me the easy and reliable trading platform are c-cex, poloniex, bittrex, novaexchange and alcurex, these are the exchange trading platform so far that I am using it by now.
I think everyone has their own choice, but tome I personally using C-Cex, Poloniex and bittrex, as I found these more reliable and trusted exchanges for long period of times, never found any issue with them. I guess all the exchanges which are having support topics here are good to trust with them.