Thomas Woods does a brilliant job in explaining an abstract concept in a concrete way in this video. In a market economy the purpose of interest rates is to coordinate production across time. This is the concept you have to understand if you want to understand the Austrian Business Cycle Theory.
For more analysis read these articles.
“The Austrian Business Cycle Theory: A Brief Explanation “, by Dan Mahoney at mises.org.
The Role Of Interest Rates In A Market Economy, by austrianaddict.com.
Counterfeiting By The Federal Reserve, Although Legal, Still Results In Theft, by austrianaddict.com.