Raster images such as JPEGs and TIFFs can be imported into AutoCAD easily using the Attach tool in the Insert tab/ Reference panel. When you import an image file, it has a frame around it. This frame can be turned on or off . . .
Here is a tip about a truly useful application of the grid feature in AutoCAD–for organizing text objects in a column.
This CAD tip comes from working with some of the best CADDsters around, and will not be found in any AutoCAD textbook. It involves creating a temporary “handle” object for a Move or Copy operation, in order to ensure that the base and destination points are placed exactly where you intend them to be.
Here is a tip that will make one of the most common CAD tasks, trimming two lines, go quicker and easier. There are three basic AutoCAD trim commands you can use to trim two lines: TRIM, FILLET, or CHAMFER.