Wake Up Those Brain Cells!
Soft, natural light has been proven to give the brain a boost. A good study lamp— one that gives a steady light, strong enough to see well by but not harsh— is a wise investment. The best kind of lamp for mood and concentration is a full-spectrum lamp— the kind that replicates the composition of sunlight.
Unfortunately these are a bit pricey, but if you can’t afford one you can always schedule your study time during the day, then find a window, or even go outside to study!
The Best Source
What’s the very best source of light? Yes, you guessed it— Allah (swt), whose noor brings wisdom, enlightenment, and focus, not to mention a beautiful countenance when it shines from the heart.
May Allah (swt) richly bless your efforts to learn and spread the message of the Quran.
Be pious scholars of the Lord because of what you have taught of the Scripture and because of what you have studied. [from Al-Quran, 3:79]