I liked the Sherlock game in the title. It was one of the easier Sherlock Holmes adventure games that Frogwares made. However I played it around the time of its first release and don't remember the details that well.
If you need a walkthrough, check the one by MaGtRo here
http://www.gameboomers.com/wtcheats/pcSs/SHvsRipper/SHvsRipper.htmIf you want Hints, check UHS Hints here
http://www.uhs-hints.com/uhsweb/holmes-ripper.phpIf you want something really easy, you can try a Casual game. But be warned that some of the older ones, like Big Secret in a Small Town, may not have a useful Hint and there may no longer be a text walkthrough available (if there ever was one). They may also have itty bitty tiny pieces to find, which may not be visible if your eyes aren't so good. So if you want to try a casual game, be sure to play the demo first to make sure you'll be able to play it before buying it.