I've been learning magento1 recently, but I don't know much about how magento gets product details, and if I just want to get some necessary information about the product and some of the properties I defined, I'll change it again. If you can get your help, this will be very good. Thank you

I've been learning magento1 recently, but I don't know much about how magento gets product details

I just want to get some necessary information about the product and some of the properties I defined, I'll change it again. If you can get your help, this will be very good. 

Thank you