First, decide if you want to read it digitally or in print. If digital, get a decent-sized screen. If print, find a comfortable chair. Also, take breaks to avoid eye fatigue.
The common way is to start from the right and progress to the left. But some special formats or series might have their own unique reading directions. So, always keep an eye out for any specific instructions given within the manga itself.
To read manga properly, make sure you have good lighting and a comfortable position. Focus on the characters' expressions and the story development. And don't rush through it; savor each page.
Typically, you read a manga by starting on the right page and moving top to bottom within each panel. It's pretty straightforward. But keep an eye out for any unique indications given within the manga itself.