Here is another video tutorial for Logos 4. This one teaches you how to create a list of words similar to the Vocabulary Lists in Logos 3. This is a much more powerful tool in Logos 4.
UPDATE: In playing with this report more I have discovered something. Since these searches are looking for all morphological forms within the pericope, if a word has more than one possible form the word is counted twice. This means that the number of occurrences listed may be slightly exaggerated. This is a rare situation but you do need to be aware of it.