Hello again! here I'll explain what is party and how to give it a GOOD USE!
OK, so party is a group of players, between 2 to 5 members in one party, when you are in party, you can see info about the other party members, health and coordinates, if the party member is in your range ( a bit more then your range of view) and if he is under Elf protection buff.
You can press "P" to open the party window.
The health you can see as a bars above your party members and at the top right corner of the screen, which tell you how much % of hp they got, if will show only 10's for example:100%, 90%, 80%, 40%...
You can also see the correct amount of hp of the party members if you open the party window, it will show correct HP/max HP.
You can see the party members coordinates at the party window, its hard to tell where they are using the coordinates, but you can use it to walk to their direction.
If a party member is out of your range witch is a bit more then your view, his name background at the top right corner of the screen will become red, and when he will get back in the range it will become gray again.
When an Elf give a protection buff to one of the party members, his name background at the top right corner of the screen will become green, when the buff is over it will become gray again.
The main reason for parties is the EXP share, when you are in party, when someone kill a monster the EXP shared between the party members, but the highest level get more EXP then others, and the lowest level get less EXP then others.
Also the party include DK, ELF, and DW, the party will earn EXP boost, here is a table of the EXP rates with DK+ELF+DW and without:
members|without............|with...............|
...........|DK+ELF+DW......|DK+ELF+DW.......|
...........|....................|.....................|
1member|100%EXP..........|100%EXP...........|
2member|120%EXP..........|120%EXP...........|
3member|150%EXP..........|200%EXP...........|
4member|170%EXP..........|230%EXP...........|
5member|190%EXP..........|260%EXP...........|
I'm not sure the rates are 100% correct but you get the idea. Also the rates may be different between servers.
The fact that the highest level get most EXP is very useful, it means that high level players can party with lower levels then them to earn more EXP, this way bought sides win, the low levels which usually stuck between strong monsters to weak monsters that give low EXP find joining a party with high level against strong monsters as a good way to earn EXP, and high levels which get low EXP from weaker monsters then them, and usually takes them a while to kill monsters in their own level find joining a party with low levels against weaker monsters then them that takes usually 3-4 hits to kill a fast way to earn EXP.
I hope you find it useful!