First Time Tree Grower

Closed on my house last month. Getting started on my backyard now.

I would like to have 3 fruit trees ( orange , pomeogranate, peach/pear) planted along the fence.

I live in hardiness Zone 9, Texas.

Currently there is a dead tree and an overgrown lavender tree. I plan to get them removed.

Wanted to start on good foundation, all beginner tips would be appreciated.