Long Story Short: Invest While You Can
Don’t let this idea of, “I have to buy a whole Bitcoin” consume you. Chances of 99.9% of this planet owning a whole coin is ridiculous. Bitcoin is fungible, which means that it can be split up into many millionths. You can own a tenth, a twentieth, even a thousandth of one coin. You don’t have to only own one!
That’s why we encourage you to invest in small increments in order to gain the most value. Buy what you can whenever you can and keep that savings going.
Most of all, keep your wallet safe. Don’t keep it on a computer that is connected to the internet (unless it’s a “hot wallet” that you use for frequent spending, containing only a small fraction of your share). Look up “cold storage” on Google to find guides that will help you keep your coins secure.