Are you aware of the legality of Bitcoin in your country? If it is totally legal, then find an exchange that operates in your country, register an account, deposit your funds and look for a buyer, this can be P2P or you can create a buy order.
Note that there are different types of exchanges for different people, depending on the amount of personal information you are willing to show. I like privacy and freedom, so I go for exchanges that do not ask for KYC and decentralized ones.