First point is to know the volatility of the Bitcoin Market and what you are getting into. Its a very unpredictable one. Follow the old mans saying "Invest how much you can afford to loose". So if tomorrow the price tanks to $5000 or below you shouldn't have a migraine up your head. So once that's done and you are all set learn what is Bitcoin at its basic preferably from a youtube video so you can understand it at a layman's terms. It is better to learn the tech part of it. Also very interesting.

Next thing is to choose your wallet. Now wallets have something called the private key which is like your key to open a lock. Most of the wallets online don't provide you. So if you store large amounts of Bitcoins there and tomorrow the wallet goes mia you shouldn't complain about losing your Bitcoins. Better get a wallet which gives you access to your private keys. You can google about it. You can store a few Bitcoin in a web wallet so you can spend it on the go. Also make sure you note down the seed words which is help you in to recover funds which disaster strikes.

Ones that's done you can purchase the Bitcoin from anywhere feasible depending on where you live and transfer them to your wallet and hold it for the future. If you are lucky the price might go to $25000 or higher or lower than today. Think of it as an investment or an asset. And if you are a risk taker you can try trading. But its highly not suggested to do so.

Hope this helps and if you need any more information PM me so I can explain you about it.