Aringo: https://aringo.com/
Aringo is a service that provides MBA application guidance.
Magoosh: https://magoosh.com/
Magoosh is a portal that helps graduate school applicants prepare for graduate entrance examinations like; GMAT, GRE, TOEFL, LSAT and IELTS.
Application guidance for the Harvard Law School LL.M (It features similar guidance for most grad school applications) : http://hls.harvard.edu/content/uploads/2017/09/Sample-FinAid-App-for-Web-2018-2019.pdf
http://hls.harvard.edu/content/uploads/2017/09/Sample-LLM-App-for-Web-2018-2019.pdf
A collection of articles with application guidance by Stanford Law School: https://law.stanford.edu/blog/?tax_and_terms=3137