Cache: (Cache Operator)
Using this Cache Operator you can easily find out what is the most recent cache of any specified website is. This operator is helpful for identifying when a page/post was last crawled.
For example: cache:jedcart.com(here is the result what you get. See the image below)
allintext: Operator
This keyword search operator looks for the searched keyword/phrases in the content of the indexed pages without giving any importance to the title or URL.
Search for: allintext:”skyscraper technique”
Put absolutely anything into those double quotes and get better results.
filetype: or ext: Operators
This operator lets you search for files with specific extension or type.
Usage: Keyword filetype:pdf
Keyword ext:pdf (Replace keyword with anything you might want to search and pdf with any file type)
The above image shows all the pdf files having SEO word either in the title or body.
This keyword sounds useful while looking for specific variety of file.
Your examples are excellent, perhaps a bit more detail on some (eg Cache) as they are a bit lean, but that could also be the topic.
Would the results be better using duckduckgo.com rather than Google
Look forward to part 2