I just bought a bit today. I use Coinbase and buy LTC with Fiat, then send that to Blocktrades to buy the Steem. I use LTC because it's super fast, usually gets to Blocktrades within a minute.
In terms of infusing cash, a lot of us, myself included, learned about Steem at the top of the crypto bull market, it's not really Steem, it's the entire crypto market. It doesn't change the fact that we're either at or close to the bottom more than likely right now, and the last thing in the world I'd ever want is for Steem to skyrocket and had not taken advantage of it at .16 USD.
Well I've noticed that steem drops when btc drops but doesn't recover at all when btc rises. That has me a little concerned