I am using windows 10 and IDE 1.8.5
When I extract the breadboard zip file to the hardware file as instructed and restart the IDE no board appears in board manager. If I look at the Arduino files I find "hardware" with my other sketch files and open it and every thing appears to me there I have tried several times, and an earlier IDE release.

I don't no what to do next?


You need to use the download link "", which is actually for Arduino IDE 1.6.x and newer.