Hi, I'm new to this. I've always wished to create an index, for hobby and all.

Not the kind of index at the end of lengthy books, but the statistical kind, like a happiness index - happiness index - Google Search

Here are two examples of types of indexes (there are thousands more):

Human Development Index - Wikipedia, the free encyclopedia
Quality-of-Life Index - Wikipedia, the free encyclopedia

In the past, I've read basic statistics-related stuff, but they have never gotten me anywhere near helpful.

So in any event,
How do I go about this?

Please in plain English. Links are always helpful. Thank you.