I am a visual and as we are studying, I like to print out things like this to keep in my Bible. As we move into ch.13 soon, it stood out to me that Absalom and Amnon had different mothers but again I like a visual.

Here is a good one you might like to have.

https://www.bible.ca/archeology/genealogy-house-of-david-salmon-rahab-boaz-ruth-obed-jesse-eliab-abinadab-shimea-nethanel-raddai-ozem-elihu-david-zuruiah-abigail-joab-abishai-asalel-zebadiah.jpg