I have been using vim for quite some time and am aware that selecting blocks of text in visual mode is as simple as SHIFT+V and moving the arrow key up or
v%
will select the whole block.
Play with also:
v}, vp, vs, etc.
v}
vp
vs
See help:
:help text-objects
which lists the different ways to select letters, words, sentences, paragraphs, blocks, and so on.