Ask learners to take part in a focus group, online or face-to-face.  Their remit should be to produce a bullet point list of advice to learners who are new to this online experience.  Ask one or two of the group to chat on video or in an asynchronous session, informally offering the new cohort advice.

Example: David asks his learners from a previous cohort to create a bullet point list for the next cohort with tips and comments. He then asks them to create a short video of these points that he can include at the start of the next delivery of that module.