Ok I will answer for Wentworth...I too bought Robert Walsh ebook.I did learn a lot about lottery by reading it and studying it, but it's almost impossible to win with his system. He tells you to convert all the drawn numbers down to only 5 numbers...like 0,1,2,3,4...so 5 again converts back to 0...6 converts back to 1...7 converts back to 2...etc. so his strategy is you look at the last numbers (I'm using PA )....795 converts to 240,,538 converts to 033,,,614 converts 114, 351 converts to 301. So now you look at 240,033,114,301...so now Robert says to use a strategy.These are his strategies +1,+2,-1,-2, so now you can see that 033 is related to 301. You would have to use the strategy -2 to get this number. He says that you will know which strategy to use because strategies repeat. I suggest you may buy his book just to get some knowledge of lottery if you have the money, but Like everybody I know says you can't win with his system.
The reason Wentworth probably didn't go into detail is that Walsh made it very complicated to try to explain...you have to be a mathmatician or some other math genius to impecably understand his book...and then at the same time you have to know lottery very well to even use some of what he says...so all in all I would say it's not user friendly at all.
Good Luck...