There is a process before you can do that, however, you can start by buying bitcoin with around the smallest amount that you can test to see how it feels like owning it but you won't feel the fluctuations since it's just a small amount.
I second this, and to be honest, people need to come to the understanding that you can actually start small in the network, having the mindset that you must outrightly buy one Bitcoin before you can be said to be a Bitcoin investor is a misconception that really needs to be corrected. Mind you that you should only invest what you can afford to lose, so the best thing to do is to find a strategy of buying at intervals, and before you know it, you would actually own a stash that you'll be surprised how you accumulated all that. As far as price corrections are concerned, newcomers to the network must understand that it is a part of the network that is constant, you must learn to ignore it most times and make sure it doesn't send you panicking/selling.