Well, personally Kucoin and Crptopia are good exchange platforms, but the one that got I rely on is Bitrus, in terms of exchange rates and transaction speed, it's exceptional. It also supports 50+ altcoins and an active community that can share their interests and expertise to you. Interface is designed for beginners with tools that can assist most of your endeavors, it also supports repurchase strategy to all platforms.
Please dont recommend scam exchange i think you still dont know regarding cryptopia exchange. If newbies mistakenly following your suggestion they will be victims definitely. For your kind information It's got hacked in 14th January 2019 you can check out cryptopia homepage here importance announcement so Don't deposit in cryptopia.