https://enshop.bitmain.com/product.htm to purchase the most efficient miners on the planet. For a noobie I would 100% recommend the "ANTMINER S7-LN with power supply" because it comes with everything you need (except some little power cord for the PSU) and is very cheap, good efficiency and also very silent. That PSU alone is worth $180... They also run THE ONLY legitimate cloud mining service as well, which is my personal favorite,
https://www.hashnest.com/ Do be carefull, the S9 is hitting the market. It delivers roughly four times the hashrate of the S7 with about the same power draw... You might want to wait before purchasing an S7.
@OP, listen to what notlist3d said: the days of PC mining are over
Eh it's more like 2.7x the hashrate but yes they're more efficient by a large margin. Very expensive though, even the regular s7 is expensive for a beginner. Which also brings us to a great point about bitcoin mining, the difficulty. This is a good topic to study before getting into mining as this will decrease your profit by 3-7% a month at least.