Other Websites
There are many Spectrum websites out there, and some of them are listed below.
Spectrum related
World of Spectrum
The largest Spectrum site, with vast amounts of everything Spectrum related.
Official site for ZX32, the free emulator for Windows. Not updated for many years.
ERROR - Geocities closed years ago, the link was http://www.geocities.com/SiliconValley/Bay/9932/ but don't try going there - it doesn't exist.
Spectaculator
Official site for the Spectaculator emulator. This is also where this program can be purchased.
Sinclair Research
What's left of the company which produced the Spectrum. Nothing about Spectrums there today.