Yes, all the resources, modules and lessons are released to you at the time of purchase, this course is not drip-fed.
As you are able to access everything at once, you can complete lessons in your own time and in your own order but it is advised that you follow the lessons in the order they have been presented to prevent particularly, experiencing an unsuccessful import of the OneNote Notebook.
There is support of you run into issues however by either putting a comment on the lesson or by emailing support @ igorganiszer.com.