How to use the keyboard to drag and drop?

Solution 1:

Daniel Lawson provides a really useful and widely applicable solution in a comment above. It deserves its own "answer".

Can you three-finger-drag for drag and drop? What hardware do you have? What version of the operating system? – Daniel Lawson♦ Oct 3 '12 at 17:35

I just used three-finger drag to select that text and then used the Cmd-C and Cmd-V for copying and pasting. That's all you're likely to need except in situations where an app requires you to move a switch or drag a visual object.

Solution 2:

One way to resize a window without drag & drop is an app like Moom, which lets you resize via keyboard and hover and click, for certain preset locations.