In relation to what happened with BITTREX regarding their withdrawal issue, I am now curious on what trading sites are trustable. Any recommendation? I am just a newbie in trading.
Almost all are
trustable*, it's just that you experienced (or you just read lots of withdrawal issue in Bittrex?) some issue on Bittrex side.
Even those suggested trading platforms here also have withdrawal issues on their side. But for me, I don't have any whether on Bittrex or any other trading platforms. So I think you need to try mulitple trading sites since you will have a different experience. I used, Poloniex, Bittrex, HitBTC, Cryptopia, Coinexchange without any problem (or should I say only minor problem).