2. For a notebook, look at the motherboard, cpu (the model with the letter U behind it is a low-voltage version, which is not recommended for games), memory, graphics card (bit width and memory, first-generation system, personally recommend NVIDIA's game is good), and hard disk is almost enough (it is best to have a solid-state hard disk); Online shopping is not recommended for desktops (except brand machines). You can get a configuration sheet from Shenshen, then buy it according to the order and find someone to install it (ps machine is not guaranteed, please pay attention); For tablet computers, look at the processor, memory, screen, what systems are supported (Android is mainly for playing, Windows can), and finally, the most important thing is to have a formal invoice;
3. Compare several price/performance ratios or go to a physical store to experience before deciding which one to buy.