Jang-gi is Korean Chess. If you've played western chess at all, you can probably learn Jang-gi quite quickly. I learned to play it on my cell phone and in a couple of weeks of playing it on the subway I learned the moves well and could play a decent game against the second lowest level. It can sometimes be hard to find real opponents to play against, and if you want to play against a friend who is far away you might need an online venue to do that. Since Pmang even allows foreign sign-ups for people not in Korea, with a little fudging, you can play against people back home too. I'm not going to talk about the rules here, but more how to get the application up and running and annotate all the various options. If you want to read the rules you can read about it here and here
First up after you cruise to the site you'll get a menu with various town choices. These indicate a level of play. If it is your first time I recommend free play or the beginner level. After you choose one you'll get a couple pop-ups and the pmang installer will do its thing. As always if this is your first time to the site, you'll have to install a few activex controls. After choosing a town you'll get the main lobby. If you want to you can change the room, but unless you're meeting someone in a specific room you probably don't need to. There are various options including the ability to watch a game in progress. This lets you jump into any game which isn't limited to 2 players and observe it. While in the game you also have the option of rewinding it and watching the moves up to that point. You can report a room, but I don't know what that entails and it is probably unnecessary. Also you can create your own room. There is a chat at the bottom. If you click on create a room you'll get a little pop-up. You can pick a title for the room, set the limit on how many people can join, and set a password. The join limit is for limiting observers. The minimum you can set is 2, or you can choose 4, 10 or unlimited. I can't possibly imagine why you'd want to arbitrarily limit a game to X amount of observers but you can.
Once you're in a game you'll have a choice to set things like take-back, time limits, move limits, etc. You can also switch your horse and elephants position if you like before the game starts. I'm not exactly sure what 접장기 is. I believe you can also use the grayed out button to switch sides. In this particular game I think the room owner took his side and I was forced to play the other side. As well there are various buttons you can do things with down on the right hand side. They includes help (in Korean), options, invite another player, and screenshot. If you are watching a game you will see controls under one players name where you can back up moves or move forward to see current moves.
Of course I won't be posting a video of this because it is a board game. Not very exciting to watch. The interface is fairly simple to use and if you're interested in playing Janggi this is probably a good choice. I tried to play it on Hangame but that site required some strange verification process before you could start, I think because on hangame you can play for real money. I couldn't do the verification because my Korean cell phone is not in my name a friend helped me create the account and I used my foreign ID to create the hangame account. The names don't match. I'd have to make a new account using my friend's ID.
If you have an SK cellphone and want to play Jang-gi on the go, I recommend World Chess/Janggi 2. It includes western chess and Jang-gi in one game. Practice games of various levels and tournaments. If your phone is bluetooth enabled you can play a bluetooth game against a friend who has the same.