The following series of videos provide a progressive introduction to the practicalities of ROC resolution.
The module which is used in the demonstrations can be installed with apposite and is in the package demo-resolution. Once installed the module will be located here
[ install ]/modules/urn.org.netkernel.demo.resolution-x.x.x/
The video tutorials are self-explanatory but it would probably be a good idea to follow-along and use the tools for yourself.