A lot of AutoCAD users may know about this tip, but it’s worth pointing out. I’m a lazy and terrible typist, and I use icons most of the time, so this method helps me a lot.
I keep my right pinky finger on the Up arrow all the time to scroll though past commands, at least the last 2–5 ones I’ve used. I think it is faster once you get used to it. And I also type P for previous to select multiple objects.
Notes from Cadalyst tip reviewer R.K. McSwain: There are many keyboard shortcuts available in AutoCAD, and you don't have to be a keyboard junkie to use a few of them: Think about some of the ways to save time running frequent commands. Steve has given us a couple of good ones here. Steve's Up arrow tip is a good one to access recently used commands. Note that the system variable INPUTHISTORYMODE has an effect on the results of using the Up arrow key.
Using P for the previous selection set is another underutilized tip. When you've carefully selected multiple objects and then you need to repeat the same selection set, use P to save time.