Lineweights in CAD can be a bit difficult until you learn the tricks. At my school they taught us that you can set up lineweights in two ways; by layer and by color. You can also use both to setup lineweights, though sometimes they can cause issues when printing. This tutorial goes through the basics of setting up your lineweights in AutoCAD using these two methods.
Elevations are an important part of architectural design. There are many ways to create elevations. You can use Sketchup, AutoCAD, Revit or one of the many other rendering programs out there. Creating a three dimensional model for elevations is very time consuming and creating a two dimensional elevations in AutoCAD also requires a lot of time and effort to get the right textures and line weights, much less taking the time to render them in Photoshop. Thus, the quickest way to create an elevation is to complete them by hand. This way you can also choose the detail of the rendering depending on the amount of time you have as well as work through elevation iterations to define your ideas without the hassle of computer rendering.