What classes can I take to learn about the similarities/differences of a Statement of Work, Independent Government Cost Estimate, and Rough Order of Magnitude?
Here are a few Continuous Learning Modules that can be done relatively quickly.
CLB 039 - Cost Estimating Terminology
CLM 006 - Independent Government Cost Estimate (IGCE) for Services Acquisition CLM 016 - Cost Estimating CLM 031 - Improved Statement of Work
For longer, more in depth listing (and schedule) of online and classroom offerings, please look at the DAU Catalog available at https://www.dau.mil/training.