How to use the air fork for the newly bought mountain bike?

Maintenance, just clean it, don't oil it or do unnecessary things, it will damage the front fork.

Anyway, this fork is quite low-end It should be original 830 forks, something like XCM. Ordinary oil spring forks need no trouble.

As for that adjustment, the adjustment has not changed much. I also pressed this fork. There is little difference between the tightest adjustment and the loosest adjustment. I will make do with it. If R7 is worn out, it's best to start with R7.