For starters not going out right in the middle of the day unless I have no choice. Then when I do I always wear a hat and sunglasses, usually sunscreen and if I'm going to be out and about all day a long sleeved shirt (a light summery one like a kurta). I live in Queensland, the skin cancer capital of the world, and I'm very fair skinned. It seems crazy to me that so many people go around hatless in singlets in the middle of the day.
I use a zinc based sunscreen and try to cover up as much as possible with long sleeved shirts and hats. I don't really like wearing sunscreen, even the zinc based stuff, so prefer to cover up where possible. My mineral make-up has a sun protection factor, so I wear that unless I'm planning to swim, in which case I put as much sunscreen on as I can.
Usually only out in sun if horse-riding, so broad-brimmed Akubra, long sleeved shirt, seamless jeans, riding gloves, sunglasses.
If I go to the beach, would be Beach Umbrella, floppy hat, sunglasses & gallons of sunscreen!
I use a long thick towel to cover my legs. When go in water have a Cancer Council 'lurid pink' long sleeved sun protective shirt. Love it!
I got too burnt as a kid in the sun, so take best possible coverings now. And did so for my children.