How to buy base Ethereum?

Could you please explain the process of purchasing base Ethereum in detail? I'm interested in investing in this cryptocurrency but am not entirely sure how to proceed. What are the steps involved in setting up a wallet? How do I choose a reliable exchange platform? Are there any safety measures I should take while making the transaction? Also, could you provide any advice on managing my investment effectively? I'm keen to understand the risks involved and how to mitigate them. Thank you for your assistance.