Before you buy lots of gear, you should check out Masternode coins as well.  No need to buy any gear or spend lots of money on power + passive income is possible with a long term view.  Have a google and read up about what they are and how they work.  Masternode coins are where it's at.  They're not fast, but passive income is possible with a long term holding view.  Have a google and read up about what they are and how they work.  You can holding the base collateral coins for many years.

And in the mean time, you can skim free crypto coins off the top and either re-invest or spend them without worrying that you won't have any more.   With masternoding and staking, you have a cup that re-fills, slowly but surely.. and so far this is working out well in the months since I've discovered these coins.  Dash got me interested but it was too expensive, then PIVX.   And my old mining gear is in the garage waiting for a museum to open that will want them