I have bought lots of ebook and lots seminars, etc..
But what I found is all B****t..
So struggling after some months on how to research keywords with some great criteria as professionals are using..
Here what i have found--
Keyword should be 1600 exact search,
Exact match domains should be available,no hypens nothing..,
all intitle 50,000 and 5000 in URL..
Hope this helps you lot..