With all due respect Gene, some (me in particular) prefer written material. I have hearing issues. I have watched many videos and have found them very instructive, but quite a few are not to my liking and/or are difficult for me to discriminate actual words. Perhaps I'm unique. If I miss 30% of dialogue, I really miss 100% of the instruction - confusion and frustration reign. I use free instruction, but I augment it with written media.
Mark

I moved through the Nikon lineup since the D100 and the D70. I now use a D800 and a D810. I have rented and borrowed a D500, which many seem to tout as a good way to shoot active subjects at long distances with long lenses, because you have "more pixels" on the subject. My reality is that unless I am really close, I am cropping anyway, even with the crop cameras. I find that my image quality, even with cropping, is better with the full frame cameras. And cropping to 1/3 of the pixels in a D810 still leaves me with 12 mp - which is more than what is required for a quality image viewed at 24" and way more than you need if you print large - like 40x60. I do like the AF performance on the D500, which is a compelling reason to use it, but with a 600mm lens, it is barely manageable hand held. Ever since getting a 150-600, I've gotten great results hand held. Using a crop camera with a 150-600 pretty much ensures that you need to bring at least a monopod, and more than likely a tripod - for optimum results. I don't see a D500 in my future. But I do see the D850's replacement in that future. As good as it is, the D850, like every digital camera Nikon has made, will be replaced with something better. I'm waiting for that.

Recently my neighbor and I both took shots of an eagle perched behind our houses. His was a better version because he got a closer shot (crop sensor) with decent results. I was using a FF with a 70-200 f4 because that was there to grab at the time. By the time I got my 200-500 mounted, the eagle "flew the coop". Later I viewed Steve Perry's free video on cropping and and I am reaching the conclusion that a crop body deserves a place in my kit when cropping a FF image will yield less satisfactory results. I also note that Steve includes a D500 in his kit. Hogger thoughts welcome.