I have been a tarot reader for two years thus far and the main thing I can tell you is that whilst you may initially think that there is a definite need to learn and use only the traditional meanings of each card, eventually, you will find your intuition kick in and you won't rely so heavily on the cards and their "true' meanings. The most important thing about reading is the message. As long as you are getting the message across that needs to be heard or told, then that's really all that matters.
Tarot is broken up into both Major Arcana (main themes if you will) and Minor Arcana. There are four suites swords (representing the element of air), wands (representing the element of fire), pentacles (representing the element of earth) and cups (representing the element of water). Each suit if you want to call it that, has their own general meanings to help you break down what kind of issue or circumstance the cards might be talking about. For instance, swords can talk about communication, wands about creativity, pentacles about money and stability and cups all about emotions.
If you think that wasn't enough, it can break down even further to cards representing astrological signs and even timing (pentacles being years, cups being months, swords being weeks and wands being days) as well as the four seasons (pentacles - winter, swords - autumn/fall, wands - spring and cups - summer). The reason I'm mentioning all this is to show you that to a beginner, it can seem quite overwhelming at first which is why I want to suggest two things.
Firstly, I know of the deck you mentioned though have not used it personally, however, I think it's great you have chosen an Oracle deck as a starting point as Oracle aren't built like Tarot it's more simplified. Their meanings can be anything from simple affirmations and guidance to keywords and inspirational artwork set to inspire your own thoughts and meanings for the cards. It's a much less daunting way of getting into the feel of reading cards and working on your intuition.
Secondly, when you do decide to move into tarot can I suggest starting with the original Rider Waite deck? It's the best way once you feel ready, to jump into the more detailed decks of tarot and gain more insight into any situation or question you might have. You might feel called to do a tarot class online, or buy a book on Tarot or just try using the booklet that comes with it, but it's good to have a little more info and resources to help understand them better.
Also, once you feel you have gained the general gist of what each card means, I suggest trying tarot spreads. This will help you understand how to read each tarot card in different situations and in a different light. After you become comfortable with that, well I say it's anything goes and just do what feels comfortable for you.
Hope some of this helped!
