I'd like catch up the Arduino concepts (programming & IDE). There are excellent online tutorials available for Ardunio but all of them which I saw are made for those who didn't have embedded/electronics background. Going through them are heavily time consuming as I'm already familiar with the embedded programming other than Aurduino or raspberry Pi.

Does any one knows any quick reference materials for Aurduino which excludes electronic/embedded basics which is meant for experienced embedded programmer? That could be a big time saver for me.

Thanks in advance!