Today I was recommended Swiss Gold Global and part of their business is bitcoin mining. Guess who they use for mining??? Genesis mining...

Luckily I googled Genesis before going too far.

I have no knowledge of BTC mining and have a couple of questions.

I see this Antminer S9 13,5TH/s@1350w is $1499+PSU @ Eastshore
Before diving into more info about BTC does anyone have a rough estimate what BTC one S9 will mine per day?
I've seen from 0,002 to 0,005.

Edit: I found this link saying 0,36 BTC per month, does that seem correct?
https://www.bitcoinmining.com/bitmain-antminer-s9-review-bitcoin-mining/
Edit2: Further down in the review it says 0,285 per month...wtf?

Is there any point in starting off with only one S9 and start mining from home since cloud mining seems so sketchy?

Anyone got some useful links for a beginner?