Which is better: supporting Quran memorization institutes and volunteer work, or creating a website that includes the books, explanations, and fatwas of Ibn Uthaymeen, along with providing downloadable Quran and the ability to purchase books like Riyad as-Salihin with audio explanations?

Consider what is more beneficial for Muslims. Perhaps a website that benefits large numbers of people worldwide is more beneficial than a memorization institute with only dozens of students. You can perform Istikhara (prayer for guidance) and consult with scholars who are knowledgeable about the affairs of Quran memorizers and the benefits of electronic publishing.