architectural electrical symbols for autocad download

This is going to be a long post, so please bear with me. In class, we have not covered downloading and installing additional libraries of symbols, so surely these are items that should already have been downloaded with the software. The problem that I'm running into is the inclusion of basic symbols for power and lighting, that I feel should be included in the AutoCAD software. There are some basic electrical symbols included in the tool palette, which I have browsed through in its entirety. I really do have a strong desire to have an in-depth knowledge of AutoCAD, but this is very frustrating to not be able to find something. This is required course material for school, and due to a missed class (unexpected), I am virtually on my own to figure out the missed material. In my searching, I've found people discussing a 'Power and Lighting' tool pallette, however I cannot find where I would be able to add that to my existing pallette ribbon on the side of the workspace.

I am attempting to find symbols for items like a duplex/double receptacle, GFCI receptacles, split wired receptacle, 220/440 receptacle, overall basic power and lighting symbols. For example, if I create an MTEXT field, and click on my Symbols button, it will give me an Electrical Phase symbol, however that is for a single receptacle.

Correct, I am having a very difficult time figuring out how to locate and incorporate electrical symbols into an MTEXT field, unless of course there is an easier way to accomplish it.

Architectural electrical symbols for autocad download