No, it's a mining pool. If you have a miner, you can direct it to Nicehash, and it gives you a proportion of all the pool's mining rewards. This way, it reduces the variance of rewards for individual miners, who may otherwise go months before mining an actual block.
I did www.gotealeaf.com and my experience was great.
It's 100% online and "job placement" is not part of their core offering. It's much cheaper than most bootcamps, too. About 2500$ for a four month program.