As Manishearth suggests "What should I do next?" questions are really just shopping questions, which are discouraged everywhere.
Whether a pre-requisites question is on-topic really depends on how wide the question is:
Since the question Mathematical prerequisites for beginning graduate student in robotics is somewhere inbetween these extremes, I was waiting to see what sort of answers were created before deciding whether to vote to close. I think this is question and it's answers are very borderline and illustrate the problems with list-type questions.
While we do desperately need more questions, I would not like to encourage list-type questions. I would rather have quality content which keeps people returning to the site than meh content which doesn't.
Overall, I think it is better if we consider the use of tag wikis to document resources lists for questions like this.
The big problem with list-type questions like this is that there are several ways of doing it, non of which are a very good fit for stack exchange.
You ask for one list item per answer.
Pros:
You end up with an ordered list of list items.
You have the possibility that different peoples priorities can be accommodated.
Individual bad list item suggestions can be commented and voted on separately to good list items.
Cons:
The oldest and most popular suggestions get more votes.
New but better options never gain new votes as they start at the bottom where no-one every gets to see them.
People with many item suggestions end up writing many answers, which could discourage people from voting on more than one of them.
This essentially turns a list-question into a list item popularity contest with a significant bias towards those who get their suggestions in early.
You make the question community-wiki and let people collaboratively edit it.
Pros:
You have a single answer which incorporates all of the suggestions everyone can make to it.
Cons:
If people disagree, you can end up having edit wars.
If you are going to do this though, you may as well use a tag wiki.
You let people answer with as many list elements as they can be bothered to write
Pros:
You only have one answer per user.
Cons:
Each answer probably only contains a subsets of the full set of useful list items.
Individual list items can't be voted on individually.
This essentially turns a list-question into a user popularity contest with a significant bias towards those who get their suggestions in early.