The second is about Bitcoin mining; what is the difference between investing in bitcoin and mining bitcoin, or are they interchangeable? If you do not wish to purchase, will you mine your own Bitcoin?
Buying bitcoins and choosing to mine bitcoins are both ways to own bitcoins to get the benefits. If you look at it this way, if you choose to invest in bitcoins, you do so directly to get bitcoins, but if you choose to mine bitcoin as a way to get your bitcoins, you are investing in buying equipment as a way to get bitcoins too, so they both are investing to me, but have different methods to them.