There are two VERY important things that you will need when applying to this program. The first is the guide they provide online for registering and completeing the online application. Believe me, this guide will be your best friend. Know it. Love it. The link for this years guide is here. It should be noted that the guide and manual for the program can be found on the site that I linked to on my first post that has the site for the program in English. You will definitely need to look at both when applying.
The second thing you will need is patience. Lots and lots of patience. The application process can get very confusing and extremely frustrating. It will all be okay in the end, I promise.
With the guide, registering and going through the application online (using a program called profex) is actually fairly simple. What can make people fall behind is the documents required. You are going to need: official transcripts OR a copy of your diploma, resume, letter of intent (1 page and it should be addressed to the person in charge of the consulate that you are emailing- this information can be found in the program manual), 1 letter of recommendation (this letter MUST be on official letterhead and signed. It must also be from a former professor UNLESS it has been 5 years since you graduated, in which case, you may use a supervisor), and a scanned copy of the first two pages of your passport.
ALL OF THE ABOVE DOCUMENTS MUST BE UPLOADED IN PDF FORMAT!
The recommendation letter is the ONLY document that is exempt from this. I would HIGHLY suggest getting your recommender to give you a PDF copy, however, to upload to the application. Otherwise, the recommender has to mail out the document themselves to the consulate. This can be a bit tricky and often causes it to take longer for your status application to change online.