Hello guys. I just want to ask for your opinion or an advice.
I started trading since May 2017. I calculated all my loss, I already lost 50% of my capital

. Some coins are still in hold.
I just want to ask what can you give to me an advice or any learnings about trading. I'm using bittrex.
I also lost 80% of my capital after joining the crypto for 2 months. I also started with Bittrex. But I trade the whole capital loss. Currently I have gained some capital and interest. My experience is that if you have large capital, please trade on sites such as Bittrex, Poloniex ... If your capital is not large then you should trade on smaller sites like Cryptopia, Novaexchange, Coinexchange, Yobit, Hitbtc. These commercial pages have a small volume that is less affected by market fluctuations.
It is not about the site you are trading. You can lose even if you are trading on the most reputable site. Where site comes in is just the security of your funds. The most important thing is never to start trading without learning, which obviously the OP did not. I am not judging him, but in cases like this, shits like losing will always happen. 80% is huge and you really need to hit the books right now or you will lose more.
For the OP, browse on the coins you are holding, if they are worth holding, you can hold and hopefully they get pumped as some of them already are. However, if they are shit coins, dump them and look for a better market. Also, do not enter from frying pan into fire, go to Google, go to Youtube, there are lot of resources you can learn from to start trading safely and never follow any pump and dump group cause they will ruin you. Remember as well that stop loss is quite important if you are not sure of the coin you are holding as I am sure most of your losses would have come from the recent dump in Altcoins before the BTG fork.