Can someone recommend a site to start trading altcoins? I'm looking for one that is trusted and has a good variety of coins.
I'd recommend you the yobit website, their aupport ia a little bad but they have a ton of alt-coins and adding new one as soon as they are published/announced. There may be some other webaited but I know about this one that has a vast variety of alt-coins.
Yobit is not good to use due to many users are complain at their poor service. It takes a lot of time to respond. Also its not good for newbies because its not user friendly. poliniex and cryptopia are good trading sites. You should try there.