Is it possible to buy Helium?

Could you elaborate on the feasibility of purchasing Helium, a cryptocurrency that has recently garnered significant attention in the digital asset market? With the rapid evolution of blockchain technology and decentralized networks, investors are always on the lookout for potential opportunities to diversify their portfolios. Could you provide insights into the availability, liquidity, and overall outlook for investing in Helium? Additionally, what platforms or exchanges would be suitable for facilitating such transactions, and what are the key factors to consider before making a purchase?