README, how to run, what you will see

README.md

@@ -1,9 +1,18 @@
 # :star:   bitcoin-stock-to-flow  :star:
 Stock-to-Flow ratio and price for Bitcoin
 
-`s2f.py` is a small 1-file-only Python program to pull data from internet sources (messari.io and coinmetrics.io) to disply the Bitcoin stock-to-flow ratio and price. 
+`s2f.py` is a small 1-file-only Python program to pull data from internet sources (https://messari.io and https://coinmetrics.io) to disply the Bitcoin stock-to-flow ratio and price. 
 
-If desired rename `s2f.py` to `s2f`. 
+### What is Bitcoin Stock-to-Flow?
+Stock-to-Flow (S2F, STF) is an economic model. Read more about it here:
+- https://en.wikipedia.org/wiki/Stock_and_flow
+- https://medium.com/@100trillionUSD/efficient-market-hypothesis-and-bitcoin-stock-to-flow-model-db17f40e6107
+- https://bitcoin.clarkmoody.com/dashboard/
+- https://digitalik.net/btc/
+
+### How to run?
+
+If desired rename `s2f.py` to `s2f`. Just type `s2f.py` into your terminal.
 
 Example output of `s2f.py`:
 
@@ -14,8 +23,8 @@ Circulating BTC:              18,411,899 BTC
 Annual inflation:             1.83 %
 Forward stock-to-flow ratio:  54.75
 Forward stock-to-flow price:  98,163 USD
-Stock-to-flow ratio:          27.03
-Stock-to-flow price:          9,556 USD
+463-day Stock-to-flow ratio:  27.03
+463-day Stock-to-flow price:  9,556 USD
 ```
 
 Example output of `s2f.py --verbose`:
@@ -31,8 +40,8 @@ Circulating BTC:              18,411,899 BTC
 Annual inflation:             1.83 %
 Forward stock-to-flow ratio:  54.75
 Forward stock-to-flow price:  98,163 USD
-Stock-to-flow ratio:          27.03
-Stock-to-flow price:          9,556 USD
+463-day Stock-to-flow ratio:  27.03
+463-day Stock-to-flow price:  9,556 USD
 ```
 
 </> with :heart:   and available on :octocat:. PRs welcome.