Can someone please help me answer this?

Hello, 

Thank you for reaching out and welcome to tree fruit production! Those are certainly some established trees. That will save you some of the time and considerations that go into starting up fruit trees! 

I am happy to direct you to some extension resources to get you started. The main considerations in tree fruit are horticulture and pest management. I'll share resources for both. 

This is a perfect time of year for pruning fruit trees and preparing them for next year. Here is a pruning guide: https://extension.oregonstate.edu/catalog/pub/pnw400 The attached fruit guide also contains pruning information. 

MSU Extension has a beginner tree fruit production course available here: https://www.canr.msu.edu/courses/backyard-fruit-101

I attached an apple pest management for beginners guide here and a guide to growing fruit at home as well. 

Best wishes,