Weber is mentioned so often in subsequent texts that it become necessary to read his work just to be in the loop. In that regard, one should read his book.
That said, the early chapters were for me better than some of the latter. The ideas he posits on traditional vs. routine or bureaucratic organization are truly revolutionary. His descriptions of the inherent conflicts arising from the social structure are really insightful. The manner in which he lays out the importance of funding to the organization and the various classifications by which an organization can attempt to obtain that funding is really well conceptualized.
However, those that agree with Popper or have more modern beliefs about the manner in which economic systems are organized may find his discussion of money to be out-dated. His point of view predated the advancement seen in debt issuance innovation and therefore misses it. (How ironically Popper-ian to miss the way that Weber does!)
Moreover, he is writing during the initial period of charismatic leaders. This period has "played-out". His work is still interesting, but so much has been learned that has greater pertinence and specificity for those particularly interested in the politics of charismatic leaders.
That said, Weber's work is a turning point within academic thought and should be read.