How to get base ETH on Uniswap?

How might I acquire base ETH on Uniswap? Could you please explain the process step by step? I'm interested in understanding the intricacies of this transaction. Would I need to connect my wallet to Uniswap? What type of wallet would be compatible? And once my wallet is connected, how do I initiate the purchase of ETH? Are there any fees involved? Also, is there a minimum amount of ETH I can purchase? And finally, how long does the entire process usually take? Your detailed explanation would be greatly appreciated.