Line dry whenever possible. If you iron, try to catch bed linen etc whilst it’s damp. <Sad>
Bed linen, weekly, 90. Don’t pile too much in or stuff will be over-creased. Eg if you have a heavy king-sized duvet cover, wash the sheet & pillowcases with those from another bed.
Towels together (obviously not pastel colours with strong colours) on 60 or 90. Fresh air whenever poss. 5 to 10 minutes in tumbler to soften.
Spot clean kids clothes or soiled things first with stain remover, then you can use a cooler wash. 30 or 40.
Soak anything with blood or grass stains first.
Most clothes will be okay with 30 degrees - but see below about sweat ..
Hand wash (as in, go nowhere near a washing machine) silk and cashmere. Doesn’t take long. Just slosh around in warm water and Woolite for a few minutes. Rinse. Line or drip dry. Hang shirts and tops on hanger. Dry jumpers flat on an airer.
We rarely have shirts etc with sweat stains because we just don’t seem to be very sweaty, so I’m not sure about those.