You have to download phantom wallet
Buy Solana from your centralized exchange, which you are using right now.Eg: Binance
Send your solana to your phantom wallet.
Once you receive your Solana in the phantom wallet, press the globe icon in the bottom.
Paste this link in the search bar : https://jup.ag/swap/SOL-44vUT784AtRVzS7Yxp8en5LuHa1HibECKpTkrRespump
Press swap to get your tokens