A recent systematic review investigates: (i) the main components of existing internet-based interventions which support family carers of people living with dementia, (ii) those components which are most valued by caregivers themselves, and (iii) the evidence for the effectiveness of such interventions.
Hopwood, J. Walker, N. [and] McDonagh, L. [et al] (2019). Internet-based interventions aimed at supporting family caregivers of people with dementia: systematic review. Journal of Medical Internet Research (JMIR). June 12th 2018; Vol.20(6): e216.
See also, an earlier review possibly of interest:
Guay, C. Auger, C. [and] Demers, L. [et al] (2017). Components and outcomes of internet-based interventions for caregivers of older adults: systematic review. Journal of Medical Internet Research (JMIR). September 19th 2017; Vol.19(9): e313.