Unless you are already working with AutoCad or taking classes, go with a generic one and modify it to suit your current needs AutoCad is hard enough without that extra load. Besides, you need to know how to make lines, rectangles, text, Mtext, ... etc. before you can make a template. Templates are not that hard. You just need to know what size paper you are using, and how to make the text and lines you need.
An employer, or a class structure will either show you their proprietary template, or teach you how to make one.