I think
Bitfinex and
Bitmexbtc.co are pretty good sites to trade with MARGIN.
That means you can borrow funds to make the trade, and usually borrow more than 3x or 10x your account's btc balance.
I recently wrote a very easy to understand tutorial for how to trade on Bitfinex. It offers 3.3x leverage so still quite conservative. Read more about it here:
https://bitcointalk.org/index.php?topic=1805736hi, i'm new here. where is a good platform for me to buy and sell bitcoin when it go up and down? thank you.
Welcome. We have a sub here "Trading Discussions" in the "Economy" section. Probably best to move the thread there. Also this depends on what you want to trade. Altcoins or other currencies. There are really more exchanges then i can list here. But here are a few:
bittrex
yobit
bter
coinexchange
hitbtc
bleutrade
cryptopia
Just take a look and see for yourself what you like.
thank you i will look into these exchanges. i only want trade bitcoin.. altcoin is good to trade?
how do i move the thread?