Q: Does this particular orchid require a resting period over winter?
A: Yes. Especially if you want it to bloom.
Q: When do the flower spikes start to appear?
A: Around mid spring.
Q: What, if any, fertilizer should I give it, and how often?
A: A non-urea based nitrogen fertilizer that has a N-P-K of roughly around 20-20-20.
Here're other bits of information:
1. Intermediate to warm grower that can take cooler weather during the winter. No lower than 45 please.
2. Bright indirect light. Think Cattleya light.
3. Moderate to high humidity. Roughly 60% and up.
4. Can be grown as an epiphyte or a lithophyte.
Here's a link:
IOSPE PHOTOS