OP, ignore all the people having a go. MN is a terrible place for people who just can't comprehend that there are people who are different to them.
I would also recommend the Delia Smith How To Cook books, I bought them all when I had my first home. You can get them cheap second hand online. "Cooking for Blokes" is also a great book, my cousin bought it for me as a joke 
Also, look for any cookery classes in your area, or if you have a local WI, see if there is anyone there who would be prepared to give you a few lessons on the basics. or a friend or family member? You could thank them by cooking them a lovely meal at the end of it. When DD was a baby the local Sure Start centre did a great 6 week course, but I think most of that stuff ended due to funding.
As PP have said, switch to Aldi or Lidl if you have one nearby.
If you could teach yourself the basics, you would save a fortune. There are also cheaper options to what you already buy.
You can research food hygiene online, or even do a food hygiene course online for free possibly. https://www.food.gov.uk/business-guidance/online-food-safety-training
Just start out trying to cook some simple meals and work your way up. Jacket potato with beans and cheese is easy. Chicken breasts with a jar of sauce, is easy. Buy some preprepped veg to go with it, 3 for 2 offers etc, until you work your way up to cooking the veg. One step at a time.
Good luck.