What laptop are suitable for my son online classes?

Everyone knows about COVID-19 situation, when it started all over world were closed, and my son school was also closed, but school management taken online classes, so I have given my old laptop to my son, even still it's closed, and they have taken online classes after almost 1 year, and I have really hard to do my office work because of him, now I decided to buy new one for him, and my friend suggested that I buy from ReeCoupons, but confusion is that, what type of laptop is suitable for school online classes?