I went to all the trouble of finding the pdf save but I just noticed the one I use has PDF save http://www.irfanview.com/ and it's free, make sure you get the plugin pack as well.

You can PrtScrn (Alt+PrtScrn for window) > Irfanview > Ctrl+V
or while Irfanview is open press "C"

Crop > select area in image > Ctrl+Y

Color Adjust > Shift+G

Color Adjust area > select area in image > Shift+G

Text > select area in image > Ctrl+T

Paint Tools > F12

Resize Image > Ctrl+R