Fleet feet is a great store/website to buy darn tough socks from. They have a customer rewards program that is basically 10% off for customers (every $150 you spend you get $15 off starting the next day for 6 months). Solid 60 day return policy too.

Any type of higher quality fabric (socks, shirts, pants, etc) I wash cold and hang to dry. Makes everything last longer. There’s hanging boards you can get on Amazon that are helpful. If you can get 10-14 socks that’d be best to keep a good rotation. Just get the thinner style for summer and thicker for winter but you probably won’t notice much of a difference weather wise.