Casseroles, saucepan

• Which fats should I use?
• The handles of my stainless steel casserole get hot during use, is this normal?
• My stainless steel casserole is making a humming sound on my induction hob, is this normal?
• How to make optimal use of your stainless steel casserole?
• Stains appear on the outside of my stainless steel casserole. How to remove them?
• Can I use my stainless steel casserole in the oven?
• Can I use my stainless steel casserole in the microwave?
• Are my stainless steel products dishwasher safe?
• There's water under the rim of the glass lid, what should I do?
• Rust appears on my stainless steel casserole, what should I do?
• My stainless steel Mauviel1830 casserole does not connect with my induction hob, what can I do?