You have whole youtube channels with models for life drawing. There are whole web pages offering paid courses on life drawing.

Doublin art studio: https://www.dublinartstudio.com/monday-life-drawing.html

Edinburgh university course: https://www.course-bookings.lifelong.ed.ac.uk/courses/DP/dra...

For beginners: https://www.course-bookings.lifelong.ed.ac.uk/courses/DP/dra... Yeah, it totally disappeared.