How to buy REIT units?

Sure, here's a questioner's tone description based on the paragraph "How to buy REIT units?": "I'm interested in investing in REITs, but I'm not sure how to get started. Could you walk me through the process of buying REIT units? Do I need to open a special account or can I use my regular brokerage account? What are some of the factors I should consider when choosing a REIT to invest in? Also, how do I keep track of my investment and monitor its performance over time?" As a cryptocurrency and finance professional, I can also add that while REITs are typically associated with traditional investments like real estate, there are also digital REITs that invest in blockchain-based real estate projects. However, it's important to do your research and understand the risks and potential rewards before investing in any type of REIT.