There's a lot of things you need to consider that if you don't give importance your investment may be at risk so here are some of the things ou need to consider or to study.
Learn about the basics first such as:
Bitcoin wallets
How Bitcoin works
What is Blockchain
Types of wallet
And different kinds of investments
Second Learn what kind of investments you need to do, here are:
Trading
Holding
When you've decided what kind of investment you're going to do start finding exchange where you will bought your first bitcoin there's a lot of platforms where you can buy bitcoins such as:
LocalBitcoins
Binance
Coinbase
Just search on the internet.
NOTE: You should know the risk you're going to face when it comes to investment remember that there's no assurance that if you invest you're going to earn so invest only what you can afford to lose.
Yes, investing in Bitcoin is not secure while the risks are growing, there are now a lot of people who spend in the virtual currency that is attacked by hackers as well as fraudsters. Many words from other people that should not be involved in virtual currency.
if the stolen bitcoin is certainly most in the careless in investing in bitcoin. therefore we all must always be careful and always wary with links in the link made by hackers. because the hacker was quickly entered into your account from the link links and wifi carelessly