Wiring diagrams are usually included with the LED tubes. And yes watching a few "good ol' you tube" videos is always a good idea. LED tubes are not all wired the same.afjes_2016 : In fact, I love LED. Do you have some sites/links that can show me how to wiring a LED tubes?
Doesn't seem to be an issue. If you plug it in with the wrong end it to the power it just doesn't work. The pins themselves on the wired end don't seem to care whether they are on the hot or neutral.Since the pins can rotate into the tombstone either way I would assume no problem. AC doesn't really have a ± direction.
You probably want a soft white light for your kitchen. The daylight bulbs are kind of harsh in my view.I leave my kitchen lights on for around 16 hrs/day but just recently replaced the four tubes. I was afraid LEDs would be too bright and didn't have time for research, so I am committed for the life of those tubes. I have one single tube shop light in the garage which is a candidate as I can use its tube as a spare for the other two lights. It's a candidate as it's the one most used and takes a while to get to full brightness in the winter as do my CFLs in the fixtures by my door.