Thanks Ray. All useful info - especially on bulk buying. I have just bought a bundle of miniature micro screw stepper motors for my grandson's train set for little more than the price of one. The lad is only 9 but he is utterly fascinated by the Arduino. We are definitely having FUN!
Yes, I have the Arduino Language Reference page, but there was nothing there to help me understand lines like:
cout << F("Serial number: ") << hex << cid.psn << dec << endl; in 'SD_info.ino'
The knowledge that '<<' was 'bitshift left' didn't help much. But thanks to Google I eventually stumbled on streaming.
BTW CORAL 66 had nothing much to do with COBOL other than the influence of Algol. It was a compact real time programming language that enabled us to monitor and control the distribution of electricity and other public utilities in large networks from remote control desks on computers with only 192Kbytes RAM and 4Megs of disk (yes - that was in the late 1970's!!). And they ran for 15 years before replacement.