You can buy some Bitcoin now if you are really a risk-taker or if you think that days from now Bitcoin will still be growing, maybe trudging the way to the $10,000 hill zone. In addition, since many alts are also moving, you can select some 5 good alts where to invest your money and encash them whenever you already realized a handsome profit. As you might already know, investing with cryptocurrency can be carrying some risks so always be informed and do your own diligence and at the end don't be shocked if you lose some money or better yet made some good ROI.
Can you give me an example of a couple of altcoins?
First off:
1. 99% of altcoins are bad investments, and not to mention that you'd have to time the markets really well to profit off it.
2. Don't invest in things you don't understand. So if you'd need to ask which altcoins to invest in, then I'd suggest you don't go for it.
I'm sure this isn't the reply you want to see, but someone just has to say it.