I understand you are looking for resources for the ARCH exam.
Please allow me to share with you the following information with you.
Check first the general information and Exam Topics at the following links:
Also here at the Cisco Learning Network you find FREE valuable study material like the following: ARCH Study Material
and an E-learning option you may want to consider at the following link:
Finally you may want to check out the FREE training videos available for the CCDP certification at the tollowing link:
I hope this information is helpful for you.
I wish you all the best in your ARCH certification exam.