OK, so from the words you chose above, it's clear that what you need is a secure, safe way to invest your money and be prepared for the future, whatever that future may hold.
That is not compatible, by the way, with this:
"Maybe I'm just hoping to find a really good buy and make a 50 percent gain in a short amount of time

."
And you probably understand that, given your tongue-sticking-out emoticon.
There is an annual return out there on the market that's available to
everyone. You don't have to be an expert in finance. You don't have to worry about choosing the right stocks, or having the right timing, or tinkering with your portfolio. Anyone,
anyone, can get this return. "Joe the Plumber" can get this return just as much as a professional stock whiz. Because money is money, it's interchangeable, it doesn't matter whose money it is.
For quite a while that rate of return, the one that's available to everyone, has been (cue fanfare):
about 9% annually.
That's right. Anyone, without any special training or knowledge, can get a 9% annual return with safety and confidence. That adds up to your "50% gain," by the way, in a little less than 5 years.
Where people get into trouble is when they try to beat that annual return that's available to everyone. They think they can do better than 9%. And as part of their attempt, they do all kinds of risky things which can end up in them losing a significant portion of their money. Really, this activity is not even properly called "investing" -- it is
speculating. It is making a bet that you know the future better than anyone else, better than the whole market, including many professionals who eat, breathe and sleep this stuff. But guess what? You probably don't. It's best not to make that bet.
I highly encourage you to go reads this article and learn a little about the fundamental philosophy of investment, and how investment is really very different from speculating:
http://harrybrowne.org/articles/InvestmentRules.htm
Then came back here and ask any questions you might have after reading it!
What do you mean? You have a total of $1,000 to invest? Is that amount fixed, that is, there's no more coming in, or will you be saving more each month?
As to betterment.com, I am not familiar with it, but after having briefly reviewed its investment portfolio my assessment is that it's not bad, but you can do even better.
Again, let me know what you think of the article and any questions you may have, and perhaps we can go ahead to the next step and get you set up.