Caine plans noob help

Been out a season or 2 and had some questions
First of when and where can I find the plans for the Leveling gear
Next has the strain gameplay / build changed much… was running a hunger arrow/ strafe build

Bounty caches or green goblins.

Not really.
https://d3.maxroll.gg/guides/god-ha-demon-hunter-guide

But there are new strafe Builds for Season 27

Best for speed GRifts
https://d3.maxroll.gg/guides/shadow-impale-demon-hunter-guide

Best for Rifts.
https://d3.maxroll.gg/guides/ue-multishot-demon-hunter-guide