You see since the entire "engine" of the tarot "magic" is actually being formed through cognitive thinking on your part and visualization to enhance the available data (access to the subconscious mind for example), then the subconscious mind is actually the one asking the questions.
You ask consciously what you want to know but if there is a pressing question in your subconscious mind that you would benefit from- and it's more pressing (translated to mean it's more important to you in the grand scheme of things)- THAT question will be what the Tarot will answer.
This is why I often start with a "generic" reading with myself. I'll do a "what is the most likely outcome based on current circumstances" and will open my mind to seeing the answer and the question in the cards. It's an intuitive and meditative process at it's core. Beyond the generic reading I use the same phrase but tack on what I specifically want to know i.e. "... in my financial situation" or "... in my love life" or "... on Wizzley regarding earnings".
The result (for a newbie) of getting what I call a cross-category question interception is often your thinking that the reading gave you nothing but gibberish when if you just readjusted your thoughts and mindset into a slightly more open way - the answer would be obvious. It could be as simple as the actual question your dying to find the answer to but your question lead your conscious mind on a distraction journey.
Even if I do a reading for something specific, I always leave room for the interception question. This is a bit like dream interpretation- you have to figure out what it all means. That's the fun part though. You get better and better at it as you practice.
When I set out a reading and get nothing from it- I don't put it away. I write down the cards in the order they appeared, I leave it out and walk away. I come back and look at the cards without prejudice, without a question, just to see what story they tell me. 10 times out of 10 I've discovered the question FROM the answer and realized some amazing things! Walking away gives your mind a chance to mull over the data you just got on the cards (it didn't make sense but your mind doesn't stop trying to make sense OF IT).
The key, then, is knowing how to ask your questions and how to phrase them properly. Also you want to learn to open your mind and break out of rigidity- especially during a reading. You can always do a second reading to interpret the question of the first reading!
Sometimes it takes 3 readings to figure this out but each reading gives me a clue that takes me closer if not the whole thing appearing in the second reading! Sometimes just figuring out what the reading is saying i.e. if it's based on actions, financial security, love, or whatever it is. When you round that corner of awareness the reading takes on a whole new level of comprehension as your mind adjusts to the right frequency so to speak- to pick up the full signal.