This is one document to learn everything about NSX-T native LB capabilities.
This document highlights NSX-T LB capabilities and its latest NSX-T 3.1 enhancements.
You can find another great document to learn everything about NSX-T LB Configuration and Management:
This document goes over all the Configuration and Management questions you may have on NSX-T LB and much more!
It lists all NSX-T LB capabilities (LB Deployment, Monitor, Server Pool, L4 VIP, L7-HTTP VIP, L7-HTTPS VIP, LB Rules, and Troubleshooting) with detailed examples for each.
Document available on NSX-T LB Encyclopedia