Extending selections
In select mode you use the navigation commands that you already know. The only difference is what they do to the selection.
Try it on the practice line: in normal mode, each w selects just one word.
Press v, and the same w now adds the next word to the selection instead.
Every motion behaves this way — e, b, h, j, k, l, and the
rest all grow the selection towards wherever the cursor ends up.
That includes motions that move between lines. Press j in select mode and
the selection stretches down to the line below, which is how you select
several lines at once.
Work through the checklist below.