I want to buy a used SLR camera to learn photography. Do you think it is reliable? What should I pay attention to?

Dude, it's very reliable, and the second-hand cost performance is relatively high, but you need to find someone who knows how to help you see if there are any problems with CCD and shutter. If there is no problem with both, then look at the button. If the sensitivity of the key is not serious, it is acceptable. Of course, the price is directly proportional to the color. If the performance is ok, I think the color is almost irrelevant and can save money. There is also a price consideration, that is, the number of shutters and shutter life of a general SLR. Generally, the number of second-hand mobile phones sold outside is about 1 0,000. Of course, the more shutter times, the different prices, which can be considered. The key is to see if there is anything wrong with the machine.