Smoking blue at startup is major?

Your car is probably burning oil. Check it at least once a week, add more oil when you need to.

That's a "live with" problem.

Change your oil at regular intervals. Check your oil level weekly, until you learn how fast your car burns oil, and keep the oil level at the top line on the dipstick.

It's not a bad idea to carry a sealed quart bottle of oil in the car. But you really don't have to do that, as long as you're good about topping it off at home when you need to.

That's worn Valve Guide Seals. You can ignore it or get AT 205 Reseal and stop it. But change your oil regularly, old oil will make it worse. It's always a good idea to keep oil and water for your car in the trunk.

Yes, unless it is a British car from the 60's. :)