We too have been very grateful for Amazon. We've bought quite a few things during lockdown which we couldn't have obtained otherwise. (Mainly DIY stuff)
We always give the courier a tenner for his efforts, and a bar of chocolate/cupcake etc. And we're always happy to take in our neighbours' deliveries if needed. (Tenner tip just the same)
Amazon's site is easy to navigate (I'm a bit dim on the computer!), wide choice, good prices, swift delivery. Never had any problems.