Why are worrying about PoS now? What you need to do is [-]mine[/-], fsck that,
acquire as much ether as possible because its going to much more difficult to mine when the switch happens. So mine any damn coin as long as you can get some BTC so you can get you some ether. Or if you're too impatient, buy some BTC on Luno, and exchange it for ether! on another exchange
Check this out, this is why Nicehash has been mining Zcash almost exclusively (easiest to mine on top) for last few days:
View attachment 439552
Now if your PC is not mining anything in that list, what you should do is donate it to a needy forumite, then go to a bar and drown your sorrows