The program might look a bit daunting if you haven't worked with it before, but in the end if you know what you want to do and you have experience with other GIS software (AutoCAD MAP 3D fe.) you can easily find what you need to do, there are a lot of step-by-step guides to find on the internet as well. Google uses WGS 84, so all data you extract from google will have that coordinate system, but if you need to use a different coordinate system on your workstation, or for your client you want to do the conversion between systems at the same time as when you convert from. If you do this, make sure you convert to the right coordinate system for you. You can do this through a data connection, or by using _MAPIMPORT if you prefer to have AutoCAD data instead of. shp files and load those into my AutoCAD MAP 3D. I personally use QGIS open software (desktop version 2.14) to convert.
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