Life in afghanistan ? whats it like ?

I am 21 yrs old. At my first unit. I graduated airborne school rit after osut. N now I'm about to deploy to Afghanistan and was wondering what a typical day is like for an infantry soldier. Is there a lot of down time ? What do you do in your downtime ? I am a mortarman to be specific what do they normally do ? Time for online school ? That's prob my biggest concern outside of my mission. Speaking of missions about how long are those normally ? Any knowledge or advice would be greatly appreciated. Thank u