The Rules of Evidence are FILTERS ... nothing more, nothing less.
Understand this and the individual rules are easy to learn.
Just remember they are filters.
They keep stuff out that the court should not consider, things that would be unfair, things that would confuse, things that have nothing to do with the case at hand or the issues.
They also open the door for good stuff to be heard and become part of the court's official record, stuff that explains the issues, stuff that clarifies, stuff that proves.
Evidence is stuff that tends to prove who is telling the truth, what facts are true, what allegations are false.
The rules of evidence are common-sense.
The rules are fair to everyone, because they apply to everyone ... with no exceptions.
They do not favor one side or the other, just like the rules of baseball or any other sport or game or contest of any kind do not favor one side or the other.
Where we have problems is when we are called to a contest that has no rules! Imagine winning a game that has no rules. Face it. You cannot even have a game if there are no rules. The rules are the game!
The rules of evidence are the game we call "going to court".
And they are the Power you need so you can use the courts to control the leaders in your government, stop corruption, avoid injury, and make the world safer for yourself and the children who must inherit the mess we leave for them when our generation passes away.