What is the best index to follow?

Could you elaborate on what you mean by "the best index to follow"? Are you referring to a cryptocurrency index, a stock market index, or perhaps something else entirely? Each type of index serves a different purpose and may be relevant to different investment strategies. If you're interested in cryptocurrency, for example, there are several indices that track the performance of a basket of digital assets, such as the Bitcoin Dominance Index or the Crypto Fear & Greed Index. However, which one is "best" will depend on your individual investment goals and risk tolerance. Could you provide more context or clarify your question?