Open up the guild screen by hitting the "O" key followed by selecting the guild tab. The guild must already be created and you must be a member of the guild. You will now see a guild listing with several different options.

Show Offline Members (check box) - This option is located in the top right. Toggle this to display guild members that are currently not logged into the game. You might find this useful to focus on players that are in the game and playing vs. not online.

Guild Member List - In the main middle windowpane you will see a list of guild members sorted by Name, Rank, Note, and Last Online.

Guild Member Info
Name - The player's character name. When you click on a guild member, it will open up a side panel with all the information about that member including their note and officer's note if you have the appropriate rank or permissions.
Rank - The player's position in the guild. This position is determined by the officers or those guild members authorized to change rank.
Note is a special note on that player created by someone authorized to enter notes.
Last Online - When that player was last online. This is also useful to guild officers to check how active that player is. Remove inactive players? =]
Sorting
You can sort the list by each of the above four fields by clicking on any of the above headers. For example, click on "Rank" to sort the list by rank.
If you click on "Show Player Status" you will see an alternate guild listing by Name, Zone, Lvl, Class, and Group.

Tomator
Name - Guild member's character name.
Zone - The zone or region where the player is currently located. This is useful information to know where the player is currently located so you can determine their current status, or whether they are able to team up.
Lvl - Player's character level.
Class - The class of that guild member.

Select "Show Guild Status" again to toggle back to the previous view.

Guild Info

Guild Information
There is a Guild Info panel for each guild. That panel allows a guild to enter long term information and messages about the guild that is too long for the message of the day. The guildmaster can use the guild control panel to determine who has access to change the text in this panel.

Members Totals
Below the guild member listings you will see a listing of the total number of guildmembers and how many are online. If "Show Offline Members" is toggled off, the total number of members shown will be of those currently online.

Control Panel
Below the guild player listing you will find another area with a bunch of various buttons.

New Guild?
Group Invite - Select a player on the list, then hit this button to invite them into your party.
Guild Control - This will launch a control window pane where you can edit the ranks of the guild and set up permissions for each rank. This will be explained in detail further down the page.
Add Member - Press this button then enter the name of the player you wish to invite to the guild. Once they accept your invitation they will be added to the guild. If they do not accept you will have to invite again.
At the very bottom of the guild tab you will see:

Promote - Select a player on the list then hit "promote" to set their rank to a higher rank in the guild. A message will be sent to the entire guild that this player's rank has changed, so be careful when using it.
Demote - Select a player on the list and hit "demote" to demote that player one rank in the guild.
Remove - Select a player on the list and hit "Remove" to kick them out of the guild.

Guild Message of the Day - Select the trumpet to see the guild message of the day. Double-click on the text for the message of the day to edit it. Your current rank must be authorized in order to modify the message of the day. This message will be displayed to anyone in the guild that comes online.

Player Notes - Select a player; then hit the "Public Note" button to see any public notes on that player. Those notes will display to everyone in the guild. To edit these notes your rank must have permission under guild control.