Learn the discernment and vocation biographies of both professed Viatorians and Viatorian associates:
Check out and consider saving some of these shorthand discernment aids that help with the areas and elements of good discernment:
What is discernment?
What is vocation?
How can I pray well in discernment?
What lenses can aid my discernment?
Chicago Archdiocesan Vocations Association offers this video series embedded below as well as a great library of videos at their website to aid your discernment.
Vocation in the Catholic Church (Article)
Call to Religious Ministry (Article)