Grand strategy Paradox games are notorious for their learning curve, and Victoria even more so. The developers are now treading a fine line between making the game accessible to a wider audience without sacrificing its core gameplay.
Far be it from Paradox to ever discourage anyone from getting an economics degree! Yet, despite Victoria 3's immense depth and complexity, their intention is still to allow you to learn even the most advanced concepts the game is based on as you play.
One aspect of this is the tutorial, which they are putting more focus on than ever before and will cover in detail in a future Dev Diary. Another aspect is through tooltippable Game Concepts, which work much like an integrated dictionary or rule book. Whenever you see such a Concept in text, such as Pops, Dividends Taxes, or Market Price, you can tooltip it to get an explanation of what it means and references to related concepts and mechanics.
This powerful tool together with the Nested Tooltips allows the developers to design and explain anything in the game without writing a novel in each tooltip, and as a player, you can choose to deep dive into any peculiarities as you see fit.
So, if you're someone who has played other grand strategy Paradox games before, and believes that Victoria will be too much of a hassle to transfer onto or just someone that sees the game as a wall of impenetrable information, Victoria 3 developers have you covered, and all you need to do to prepare for the game is to start it up.