Actually, you can do this by looking for tutorials or accurate information on the internet, because the first thing you have to do is create your own Bitcoin or crypto wallet and verify it.
And there are tons of exchange platforms out there or you can do it with a trusted centralized exchange in your country of residence, and still do your research and study well before you do. And in my opinion
to exchange money from a bank account, credit or debit card to bitcoin the process is easy and fast as long as there are no other obstacles from the two, nothing is difficult and doesn't take long either.