As a Software Developer, after working with CEO/CFO/Accountants on Managerial (Cost) Accounting Projects, I started appreciating it as one of the most important areas in the business. Started casually studying it so I can easier understand it in software requirements. If Costing Analysis and especially Overhead are important in your business, classic textbooks by Horngren and/or Garrison are great and also there is an excellent series on Managerial Accounting by prof. Mark Meldrum on youtube