The phrase 'be helpful in preparing' is correct and can be used in written English.
You can use it when you are describing an action that is helpful to an ongoing process or task. For example, "Researching the best practices to use in our marketing campaigns has been helpful in preparing for the upcoming launch."
The results of the scientific program could be helpful in preparing for future manned missions to the moon.
Such occurrences would be evidence of patterns in your financial affairs or driving habits that might be helpful in preparing tax returns or scheduling car maintenance.
The present study may also be helpful in preparing the ML-based light source by increasing the trap-depth of shallow traps.
If an A-level subject neither imparts relevant subject knowledge nor develops useful skills for a particular degree, it is not going to be helpful in preparing the student for the demands of that course.
This early experience can be helpful in preparing women for a career in a male-dominated industry, and there's no doubt that, even today, working in the energy sector is still largely a man's job.
The investment bankers to the transaction can be helpful in preparing this comparative analysis, particularly by using their own analysts (who have been "wall-crossed") and can bring an investor's perspective to the investor presentation.
The following books and articles were helpful in preparing this survey:"The Future of Ideas: the Fate of the Commons in a Connected World", by Lawrence Lessig.
The first version (with "match=matchfile" and "aspect=none") is helpful in preparing to merge event lists with slightly different aimpoints.
5.009 1.469 0.932 PUsingUsing blogs in my MIS course are helpful in preparing for quizzes/tests.
AH, AD, FK and SM entered and analysed their team's data, and prepared a report, which was helpful in preparing the final paper.
