To build effective memory techniques for vast syllabi, aspirants should employ methods such as spaced repetition, which involves reviewing information at gradually increasing intervals. Utilizing mnemonics can help create associations for better retention, while techniques like mind mapping can visually organize information. Additionally, breaking down the syllabus into manageable portions assists in avoiding overwhelm. Regular self-testing and active recall also enhance memory by reinforcing learned concepts. Incorporating a mix of auditory, visual, and kinesthetic learning styles can further promote memorization.