Go to Bonfida and connect with the wallet you want to link to the domain.
Click Register domain and enter the .sol domain you want to buy. Eg. talkmarkets.sol
You need to have some USDC, the minimum bid is 22 USDC.
Once the auction is started successfully, setup a reminder for 7 days and claim the domain after you won the auction.
Now people can send you funds to your personalized .sol domain.
No further config is needed. You can try sending a small amount from another wallet to your .sol domain.