Are you applying to MS, MS+PhD or PhD in US universities, especially in Engineering stream? This would be a great guide. Although, not a complete guide, this website unlike other ones, contains lots of UNCONVENTIONAL facts that will come handy and save your time and effort.

For example, details like how to create your own webpage which you can include in your resume; why you must apply for Transcripts well in advance etc. are provided, quite unlikely in other websites of similar nature.

The main aspects have been linked to from the menu above. Use them to dig the information you want. Further, check out the links section at the sidebar, which gives quick links to some smaller topics also.

If you have any questions, put them in comments in relevant sections.
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Have a nice time!

To get started, know the fundamentals at the Introduction section