For a few months I've been putting an hour or two every week on building a small encyclopedia of opcodes, mostly because I felt my opcode game was not strong enough to participate and reason clearly about all the new soft fork proposals. There are 256 opcodes: I'm 80% done writing a small page for each of them. Today is the day I share this work publicly and invite people to come and join the fun. Check out the website here:

Opcode Explained

Documenting bitcoin opcodes.