New answers tagged training
Confused now by the question and responses. Perhaps you are wanting to: Learn how to search for data; Use data in the desktop program; and/or Learn GIS Esri has a jungle of available resources. Here are a few: youtube.esri esri channel ArcNews, ArcUser, ArcWatch Training, Virtual Training
ESRI provide a number of free "Getting started" online courses. This will be a good starting point for you. I would start with this course as it introduces the basics of GIS and ArcMap. All the other free online courses ESRI provide can be found here.
ArcCatalog is not used to author maps. ArcMap is the ArcGIS for Desktop application that is used for that purpose.
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