There is a GitHub repository for this book where you can download example code and resources
It adds realtime clock (RTC) and power management to your Raspberry Pi
2 MB SPI Flash storage and a little prototyping space
Sold as a 20cm x 20cm piece (minimum dimension) Iron on medium if necessary
This is why it's called the" KKSB Raspberry Pi 4 case with heat sink" - because there is no need for a cooling fan or a separate heat sink
Official Raspberry Pi microSD Card, A2, V30, 32GB - BLANK 4-pin There is a GitHub repositoryOfficial Raspberry Pi microSD Card, A2, V30, 32GB SC1628 BLANK Features Tested and certified by Raspberry Pi to provide the best stability and performances with all Raspberry Pi boards A2 Class micro SD card supporting DDR50 and SDR104 bus speeds and command queueing (CQ) extension 32GB cards preloaded with Raspberry Pi OS are also available! Compatibility Raspberry Pi 5, all versions Raspberry Pi 4B, all versions Raspberry Pi 3B & Raspberry Pi 3B+