Mt Mortar sidequest

I'm a visual kind of person, meaning that I work better if I have pictures and the like to go on. This is particularly true when I play games.

A few days ago, I tried to go through the Mt Mortar sidequest using Youtube video tutorial. I wanted to get TM40 Aerial Ace for Weavile, which (as Bulbapedia says) is only found in Mt Mortar in HeartGold. The video wasn't particularly helpful because it skipped through a lot of sections.
I thus went to my next option: game maps. I found a map for Mt Mortar at Psypokes. Psypoke's maps had individual images/maps for each level of Mt Mortar. The entrances and such were labelled so it was very easy for me to figure out how to navigate my way around the place. I also bumped into Kiyo, who fans of the anime series may remember as having befriended an abandoned Tyrogue. I found TM40 somewhere in the middle of the Upper Level.
As with any sidequest, I packed plenty of Max Repels. Then it was just a matter of following the map until I found TM40.