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/