Starter Kit for Arduino Cookbook
The Stack Exchange format is not well suited for opinions.  That said, people are apparently giving the kit good reviews.  And I see hardware that appears to allow for several projects (LED arrays?, motors?, ultrasonic-distance-measurement?, IR-remote-control?, Alpha-numeric-LCD?, 7-segmet-LED-display?, ect).  Which is more than you need for basic Arduino projects.

In general, it would make the most sense to find a kit with a book rather than obtain a book and a kit separately. This is because slight differences between the written material and independently obtained hardware will cause confusion.  This is generally not a problem for experienced embedded developers.

Keep in mind that embedded processor projects are half hardware and half software.  Since the hardware has already been collected, the majority of activity will be in software.  If this paradigm agrees with you, good luck &amp; have fun.