So, going into the A site of de_train is risky if you do not cover the site's peeking spots because there are many of them. The peeking spots are 1st Tunnel, 2nd Tunnel, Connector, and Popdog. I will not cover Sniper's Nest as it is very easy for Terrorists to get a peek on the CT guarding the site from there.

From the A Main Entrance, you can see the lines that has orange and white stripes. Aim at the first line and according to the photo below :



Then, you need to aim your crosshair to the top of the ladder in front of you.



Hold your mouse and release the smoke grenade. The result will look like this :

You cannot cover the 2nd tunnel with just one smoke, so you need to cover it with two. 1 at the left side and 1 at the right side. The starting point is the corner when you exit A Main Entrance. Which is shown at the picture below :



To smoke the left side of the 2nd tunnel, aim at 4th metal beam from the blue train and align it to the first dark gray area. Picture :



To smoke the right side of the 2nd tunnel, aim at the 3rd metal beam from the blue train and align it to the top of the beam. Picture :



The full result will look like this :

To do the Connector smoke, you need to go to the red train when you walk from T Spawn.



Go to the first metal pole and aim your crosshair there.



Turn around and put your crosshair like the picture below :



TO DO THE SMOKE, YOU NEED TO JUMPTHROW IT. IT IS HIGHLY RECOMMENDED YOU HAVE A JUMPTHROW SCRIPT FOR THIS SMOKE TO BE CONSISTENT.

The result will look like this :

To do the Popdog Smoke, you need to go to the pole near T Spawn that has the "No Stepping on Birds" sign and aim at the upper crack like in this picture.



Then, turn 180 degrees and aim where the smoke from the chimney fades. Like this :



And, release your mouse button to throw the smoke. The result will look like this :

So, that's all for this guide. DO NOT FORGET TO RATE IT UP AND FAVORITE THIS GUIDE! It's so others can see this. You can donate skins to me VOLUNTARILY. I'm not saying you must donate. But, if you're feeling generous, maybe you can give some? :D

https://steamproxy.net/tradeoffer/new/?partner=221822925&token=48G7Eqsk

Thanks for reading! And. have a great day!