Can you buy ARB on Coinbase?

Hello, could you possibly provide me with some clarification on whether or not Coinbase supports the purchase of ARB? I've been looking to diversify my cryptocurrency portfolio and ARB has piqued my interest. However, I'm having difficulty determining if Coinbase offers this particular coin for trading. If Coinbase doesn't support ARB, could you recommend any other reliable platforms where I might be able to acquire it? Additionally, are there any specific steps I should take before investing in ARB, or is there anything unique I should know about this particular cryptocurrency? Thank you for your assistance.