Ask HN: Best resources for job market trends and data?

Hello HN

My wife got laid off recently and is now considering changing her career. I'm trying to do some market research about jobs and current trends.

One thing that could be very useful is a website tracking job postings and their close dates. With this data, it could show trends, popular jobs, etc. Is there a tool for:

- that aggregate job market data and present trends?

- track the lifecycle of job postings (from posting to closing)?

Beside that, what resources have you found helpful for researching emerging or declining job markets?

Any insights or recommendations would be greatly appreciated.

Thanks!