Will changing my own oil and doing all the maintenance on the maintenance schedule void my warranty?

So I'm very mechanically inclined a d have always worked on my own cars. My credit just got better so I bought a brand new 2018 honda accord. My question is will doing all the maintenance work myself void the warranty. It is about due for a oil change and they want $69.99. I can do it for half that price. Along with everything else. Tire rotations, air filters, valve adjustments. Only thing I can't do is tear down a tranny and it has a CVT and from what I understand that's good for 100k miles… It'll be gone long before that.

Why did my wheel stiffen while driving?

So today while turning on the car my wheel was more stiff than usual to the point where I had to use extra strength to pull out my parking spot. But then after driving it for 10 seconds it returned back to normal. I drove it for the rest of the night no problem and no stiffness at all. My car is a 2015 Honda Accord

What do low oil pressure, charging system and malfunction indicators mean?

I have a 2009 honda accord with quite a few miles on it. Right now, the engine won't start (makes a loud thud and the ignition won't click) and the low oil pressure, charging system and malfunction indicators are all lit up. There's no oil in the car as a rock ripped a sizable chunk out of the oil pan. Will I need a new engine and what do these indicators mean when they are simultaneously lit?