How do I buy Uniswap?

Hello there, I'm interested in purchasing Uniswap, but I'm not entirely sure how to go about it. Could you please guide me through the process? I'm aware that Uniswap is a decentralized exchange, but I'm unsure of the specific steps I need to take to acquire it. Do I need to have a specific cryptocurrency to trade for Uniswap? What platform should I use? Are there any fees or risks I should be aware of? I'd really appreciate any insight you can provide to help me get started with this exciting opportunity.