#SaylorBTCPurchase
The three key points to consider when buying bitcoin are:
Payment method
Platform/venue used
Where your bitcoin goes
Payment methods range from credit card to bank transfer, payment app (PayPal, Apple Pay, Google Pay, Samsung Pay, etc.), face-to-face with cash, and even barter. Each payment method carries tradeoffs in terms of convenience, privacy, and associated fees.
Platforms/venues for buying bitcoin include digital wallet providers, centralized spot exchanges, OTC desks (private 'Over-The-Counter' exchange services used primarily by high-net-worth individuals), peer-to-peer marketplaces, and even payment apps like PayPal.
Of course, it's also possible to buy bitcoin face-to-face. For example, you could give cash to your friend in exchange for receiving an agreed amount of bitcoin.
As for where your bitcoin goes after you buy it, the options are:
Into a Bitcoin wallet you control (ie. a 'self-custodial' wallet like the Bitcoin.com Wallet)
Into a Bitcoin wallet someone else controls (eg. a centralized cryptocurrency exchange or a payment app like PayPal).