As simple as this question sounds, a new person trying to buy some bitcoins may encounter great difficulty in knowing the right channel to go through to acquire some bitcoins and as such, it would help that explanations and comments are as simple enough that anyone can understand.
Although am still a new potential in the cryptocurrency market, and newer here, i have done some digging in my offline research hours to know that the best way to buy some bitcoin is through an exchange. While there is the decentralized exchange, there's also the centralized exchange like Binance, Kraken among others of which one can download on an app store, register, fill in the kyc requirements and of course connect to your bank cards to do the transfer and get the exact amount you paid for in your wallet on the exchange or have it transferred to a cold wallet which is not a wallet provided by the exchange you bought the bitcoin from.
There is also the need to understand that the price of bitcoin fluctuates in the crypto market, and it is wise for one to buy more when the price is down and sell when the price is higher. If one should know how to follow security tips of account and wallet management, then they would have become successful at owning bitcoin as a crypto investment than someone who sort the help of a physical broker to do same and are exposed to as much higher risk than just scams and hacks but kidnapping and other cybercrimes that could befall any unknowing investor from breach of privacy of investment.
Although you are very new, you've given a very good answer.
It may sound a bit incredible to ask how to buy Bitcoins at this point in the story, but we should keep in mind that not all people act rationally, carry out a small investigation, and choose the most risk-free options.
I remember the first transaction I made when I bought my first sats. It was a payment on account to a stranger, which went right, but which could've gone wrong: it was many years ago and we hadn't much better knowledge about alternatives in my country at that time. Maybe if I've known about Bitcointalk earlier... but still. What I mean is that one can be impatient to buy his first sats, and make bad decisions.
Yeah since its quiet unbelievable since anyone could get lots of answer if they just made a research towards these kind of question. Also since he's in mining for sure that he know those basic things.
Lets assume that he don't really know. So for sure that he already got lots of good answers from this thread so for sure that he could able to buy Bitcoins from those exchange given above.
My first transactions is from faucets and I earn more thru affiliates then sold it on exchange. But he can also check his local Bitcoin and crypto exchangers maybe he would get more easiest option on which he can buy Bitcoin without exerting lots of efforts.