Welcome to the board, cloud88!!!
W&W is similar in many ways to games like Wizardry and Might & Magic, if you are familiar with them. It is certainly one of the best CRPGs I have played in a long time and had replayability which I generally find totally lacking in other games.
There are numerous threads related to this topic - try searching on keywords like "any good" or "worth buying" in the subject line.
Also read the Best Tips thread - that should give you some idea of what goes on in this game. For fun, read the Bumble thread and the Giggling So Hard thread wherein players have shared their mistakes.
Wyv