"1. Do not eat or use products from any animal that is fed and eats parts of its own dead."
Here, Titor could be referring to a link between Alzheimer and Mad Cow/Cannibal's Disease. The theory is that if farmers feed cow guts and bones to cows that they get Mad Cow. It's nature's way of discouraging cannibalism.
"2. Do not kiss or have intimate relations with anyone you do not know."
A Hepatitis A, B, C, or D super-bug easily passed by kissing and sex?
"3. Learn basic sanitation and water purification."
I would add radiation filtering. But I don't believe the technology is solid yet.
"4. Be comfortable around firearms. Learn to shoot and clean a gun."
Yep.
"5. Get a good first aid kit and learn to use it."
Build your own kit and practice monthly with each other. This is good advice even if the "End Days" are not coming. Israeli combat bandages.
"6. Find 5 people within 100 miles that you trust with your life and stay in contact with them."
I would say, get to know your neighbors.
"7. Get a copy of the US Constitution and read it."
We're no longer getting due process on the Internet. We need to start demanding our constitutional rights remain.
"8. Eat less."
I agree. Get down to your healthy body weight and learn how to fast. Restrict your food once a month. I can do 2 days on only fruit and water.
"9. Get a bicycle and two sets of spare tires. Ride it 10 miles a week."
I would add, try to walk 3 hours straight without stopping, once a week.
"10. Consider what you would bring with you if you had to leave your home in 10 min. and never return."
..and keep it all in a small backpack by the door.