Perhaps some of these questions are more appropriately asked in the New Pipesmoker Questions forum...
A little over a year ago, I was very much like you. I had a million questions, and I wanted to absorb every little bit of information about pipe smoking.
I asked a few questions, got some good answers.
Eventually, I learned that all the questions that I asked were answered by themselves in short order through experience.
I'm not trying to demean you. By all means ask whatever questions you have.
Just know that as you smoke more, and develop your technique, you will answer your own questions in due time.
I worried about relights at first, and when I heard of competitions where people were going for upwards of 45 minutes to an hour with 3 grams and not relighting, I assumed I was doing something wrong.
Don't worry about it. Relight it as many times as you need. A few months from now, you will be relighting a lot less, and not even realize it. You will figure out your technique, and without any training or internet instruction, you will become an expert in smoking a pipe the way you want to.