Along with meditation practice while explore sutra/sutta or other methods for vipassana, a beginner should explore these sutta and sutra only in order of sequence for at least 3 consecutive years. These are all EQ and ultimate EQ, and the IQ in it is applied for developing EQ ultimate :)
Abhidhamma Pitaka
http://www.buddhanet.net/pdf_file/abhidhamma.pdf
The Shurangama Sutra
http://www.buddhanet.net/pdf_file/surangama.pdf
PURE-LAND ZEN ZEN PURE-LAND
http://www.buddhanet.net/pdf_file/yin_kuang.pdf
Dhammapada
http://www.buddhanet.net/dhammapada/index.htm
Abhidhamma Pitaka and The Shurangama Sutra is very similar.
Then, on realizing the significance of that, the Blessed One on that occasion exclaimed:
with metta.