There are 3 types of follows for a salesperson: 1. Follow up is done after the initial meeting to thank the client and provide additional information like meeting minutes, needs analysis, or product samples. 2. Follow back is done after submitting a sales proposal using value bombs to highlight the product's performance, productivity, and other benefits. 3. Follow through is done if the client says no or not now, using modes like inviting them to a social group or forum related to their interests or a customer engagement program. Doing the right type of follow with the right sales lead is important.