Start documenting recommended project locations

wanted to use agaric as example, and wanted to rename to agaric-coop first,
but an .. image? made for a case study..? is blocking that.

tools/recommended-local-project-locations.md

@@ -0,0 +1,24 @@
+# Recommended local project locations
+
+We recommend that the locations for projects on the computer you use for development follow the same pattern as other developers so even commands we share can work without modification.
+
+## Initial setup
+
+```bash
+mkdir ~/Projects
+```
+
+## Each project
+
+Get the directory structure directly from the paths in the GitLab.com URL.  For example, 
+
+## Non-GitLab projects
+
+For non-GitLab projects, we recommend
+
+```bash
+mkdir ~/Projects/github
+mkdir ~/Projects/drupal
+```
+
+etc.