Understanding Society User Support

Hello. I am studying differences in single/partnered parents. To do so, I am using the British Household Panel Survey Consolidated Marital, Cohabitation and Fertility Histories (1991-2009) to identify my sample of single/non-single parents, and then, merging it with the BHPS individual questionnaire to get the relevant variables.
My question is, which weights should I be using? I was thinking on indin91_lw, but I am not entirely sure.
Besides, which type of weights are they? Frequency or analytic weights?
Thank you!