Please watch the videos below on Snow Protection, it will help prepare you for the field session.
What are the key differences to belay on winter climbs compared to summer climbs?
In which scenario would you build a Bollard anchor?
What is your takeaway?
Which anchor would you build if you needed to lower an injured climber on a steep slope?
Which anchor would you build if you ran out of pickets?
Based on this video what are the 3 main factors that impact the strength of a snow anchor?
To go further, please read the article below (Optional) :
https://arc.lib.montana.edu/snow-science/objects/ISSW_O-061.pdf