How do you buy on Uniswap?

Could you please elaborate on the process of purchasing on Uniswap? I'm curious to know what steps are involved when someone wants to buy crypto tokens through this decentralized exchange. Would you mind walking me through the entire procedure, from connecting a wallet to executing the trade? Also, are there any specific requirements or considerations that buyers should be aware of before making a purchase on Uniswap? I'm quite new to this and would appreciate your guidance.