Is Buddhism something that you should study? Is Buddhism something that you should consider as a field that you should endeavour to study and develop a deep understanding of or is it enough just to simply sit, just as the Zen tradition seems to suggest?

To elaborate a bit more, is it worthwhile to study the Sutras and other Buddhist texts or would someone be able to attain enlightenment by simply sitting without developing an in-depth knowledge of Buddhism?
At least in the Theravada tradition, it is emphasized that the role of the Buddha (technically the Samyaksambuddha) was to teach and establish the dhamma. And he was also the most qualified person to do it.

The dhamma (teachings) is like a shortcut that we received from the Buddha, which we need to first study and understand. Studying involves understanding the Four Noble Truths, the Three Marks of Existence, and other teachings found in the suttas.

Practice includes the Five Precepts and the Noble Eightfold Path. The Noble Eightfold Path includes Right View and Right Intention (which comes in part through studying), as well as Right Mindfulness, Right Concentration and Right Effort (which is meditation and practice). The remaining three are also part of practice.

So, if you do not want to study, but only want to practise meditation, then you are not making use of the "shortcut" teachings of the Buddha and instead want to find enlightenment by yourself.

For a good introduction on the teachings, I recommend What the Buddha Taught by Walpola Rahula. You can find the PDF version here. There is also a very short collection of the suttas at the back of the book.

The Tripitakas are rather huge. But a good anthology or selection of suttas can be found in In the Buddha's Words by Bhikku Bodhi. You can find the PDF version here.

If you find studying Buddhism potentially daunting, then these two books should help you get started.