I have learn with time, that when it comes to Tarot, I can't rely on others perception of the cards. If you read all the books in Tarot you will see that each author has its own meanings for each card. That meaning change also by card design or theme.
Because of people's perception, I decided to toss away the little white book that comes with the cards, when studying the Tarot.
As soon as I get a new deck of cards, I go card by card and make a 5 keywords for each card. I based those keywords in my first impression counting the colors, position and symbols. When you come to see, you become with your own set of keywords that chances are, they are not too far from the author's perception.
If you do this with at least 2 set of different decks, you will see that the keywords of 7 of Swords of one deck it can be different from the 7 of Swords of a totally different deck.
Tarot is a language that is for us to decipher or interpret, but that interpretation change base in our perception.
About reverse cards, you can do the same, finding the 5 keywords. I personally don't do reverse cards because I can give the positive and negative of a card by looking at it and base the advice base on the two sides of the card. Having a card in reverse tends to distract me from what I see, after all when having visions or dreams, we don't see the picture upside down but upright, the same should be with the cards, but that is my opinion.
If you really want to be proficient in Tarot, I suggest that you do the detective approach with each card. In which the card becomes the crime scene, the character is the suspect and then look all the evidence(clues/symbols) around the character. Everything you need to know about that card, is in the card already.. its up to you to find the clue

Play with it by laying cards and finding the theme base on the evidence, you will see that it becomes an open book of possibilities
