What I want to know, specifically, is there a way to get a list of all the internet sites currently up, on Google Search? Also I understand there are all kinds of ways to get better search results with some special tricks so put your tips and tricks here!

Always when searching for more than one word, like a name,
enclose "in quotes" and all the first results you get will include that exact name before going to others with same first name.

If you want to exclude sites like facebook follow the quoted search item with -facebook and then search.

I think this link will help you alot : http://www.google.com/help/cheatsheet.html .. It contains most of the tips you want for a specified search.. Hope it helps...

LOL ok so I had this idea and this is what I got

Results 1-100 of about 25,690,000,000 English pages for allinurl: ".com".

So, if one uses the Advanced Search options and clicks on the Date, usage rights, numeric range, and more you can choose Where in the page, in URL only. And then do the search for .com, .net, .org, whatever ya know

And then add them together?

So besides .com .net and .org

What others are there?

I know of .co.uk .gov.uk to name but two and only in the uk.