I wanted to transfer a small amount of tokens on Bittrex just to trade up while the price is low..but it says this: Your deposit address must hold more than 0.1 HMQ before we will credit your account. Do I need to send 0.1 token first then send another amount? I am confused. Also where is the list of other exchanges? I couldn't see it on the OP.

Just send your tokens. I means you should send more than 0.1 HMQ otherwise your balance won't show up and will remain 0.