Okay:

• Build a Core2 Quad 2.666 GHz 12M (older version) PC with minimum specs. There are tons of super cheap secondhand units of these in the market, cheaper than an i7 but the performance for Criptonight V7 didn't have a very high gap.
  
• Download/install a (non-malware or scam) cryptonight miner with good number of userbase like: JCE Miner Cryptonight/forks
  
• Select a pool that mines the coin of your choice (either Monero[XMR] or Electroneum [ETN])
  
• Point your miner to the pool (check the pool's guide, some has an internal wallet, some haven't)
  
• And this is the most important part: plug your computer to your neighbors's garage without their consent in order to profit. (just kidding)

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If you're dead serious on "profiting" $2 a day, just install an Electroneum miner on your mobile phone and leave the internet connection and the app open in the background.
It will "generate" ETNs for you as long as your phone isn't turned off, it's not even mining at all (if they still didn't updated it).
That's it, you didn't even need to buy anything.