You can buy bitcoin on an exchange and just store them on your own Bitcoin wallet. This is the easiest way to invest in Bitcoin. It’s called Buy and holds.
The most important part is to choose a trustworthy exchange. I curated a list of the best cryptocurrency exchange open today.
Once you chose an exchange, you can transfer your money directly from your bank account into the exchange and start investing in Bitcoin as soon as your funds are made available.
The next step after your purchase is to transfer your Bitcoin onto a cold storage device like Trezor, Ledger or keep key. This is a very important step to not overlook. The safety of your invested Bitcoin depends on this.