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Bitfinex is probably the easiest way, although it could take a few days before your USD arrives. Alternatively, you could buy BTC on coinbase, send them to Bitfinex and immediately sell them for USD. Do you need any further help wrt shorting?
Bitfinex is the quickest? Thanks I'm setting an account now. AFA shorting, ?I've never done it before. I just buy when I think something is under priced but I'm 100% convince this is a BTC bubble which means I can get more XMR when it tanks back to 210 or so.
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You can buy BTC on Coinbase with your credit card and then transfer the BTC to Bitfinex and margin sell. It shouldn't be too difficult.
Good luck.
Yeah I wouldn't give coinbase my CC info for some reason. I think it had to do with the data collection shit.