Dell Latitude E5570 disassembly: SSD replace, ram upgrade

How to open Dell Latitude E5570 to replace M.2 SATA SSD or upgrade RAM (memory) stick. RAM modules at Siggmo: https://siggmo.com/product-category/laptop-ram/ SSD disks at Siggmo: https://siggmo.com/product-category/ssd-hdd-drives/ Dell laptop spare parts: https://siggmo.com/product-tag/dell/