Remember to use the range/ distance marker above the tanks offline so you can get the feel of the actual distance to the enemy tank and its size in comparison ! The numbers on the screen corespondent to the distance to target!
Get a friend , or me to go to the TA and shoot at each other while moving around ,, it helps a great deal to train for this, learning lead for the different tanks!
Use airplane icons to get range of enemy tanks, as they fly over, the storch is great for this, just remember to pay attention to the range icon .