I've been cooking for over 40 years. If you have older editions of Joy of Cooking, they are dated. Nice for the cookbook collection but not all that useful anymore. It used to be my standard basic cookbook. It's a classic.
I've replaced it with the New Better Homes and Garden Cookbook. It's a great how-to basic book. It's also up to date with contemporary ingredients and techniques. I bought one for my fifteen-year-old grand daughter's Christmas gift. I liked it so much I bought one for myself and one for a friend's birthday.
Fannie Farmer is another classic. But it's outdated. Borrow one from the library and buy the New Better Homes and Gardens Cookbook.
Old recipes are nice to have but they don't always work well in modern kitchens with modern appliances and utensils.