Ozment, a brief tutorial on macros:
Macros are used to either say a pre-typed message, or to quickly use one or more weapon skills, job abiltiies, spells, et al. You have 20 macro sets; 10 are tied to the ALT key, & 10 to the CTRL key. Each macro set can hold 10 macros. This means that you can have a total of 200 macros at the same time.
To use a macro (and im assuming you have a keyboard), just hold down the corresponding key (CTRL or ALT), and press the number of the macro you want to use (1-0 on the keyboard, with "0" counting as "10".) You can move between the macro sets by holding down CTRL or ALT and using the up & down arrow keys.
Making a macro: Go to the main in-game menu and select "Macros." You will see a lotta boxes. To the right, you have an option to "Cut" (delete + temporarily store) and "Paste" (copy the stored macro into the selected box.) If you click on a box, you will see a menu with an empty space at the top, and 6 empty lines. The empty space is the macro title: you can type up to 8 characters in it, and the first 5 or so will show up on the corresponding box when you press CTRL or ALT in normal game mode. The other 6 empty lines are for typing out your macro.
Common combat macro commands include:
/ja "Jobability" - Where Jobability is the name of the job ability you want to macro.
/ma "Spell" - Where Spell is the name of the spell you wish to macro.
/ws "Weaponskill" - Where Weaponskill is the name of the weapon skill you wish to macro.
<t> - Added to the end of a /ja, /ma, or /ws command; automatically targets the monster you have targeted. So, for example, a macro for the Stone spell might look like: /ma "Stone" <t>
<bt> - Like <t>, but automatically targets any "red" monster; i.e., the one you have claimed. Therefore, a macro for Stone that uses <bt> might look like: /ma "Stone" <bt>
<me> - Like <t>, but automatically targets you. Therefore, if you wanted to cure yourself mid-battle, a macro might look like: /ma "Cure" <me>
/equip Slot "Item" - Where Item is the name of a certain item, and Slot is the name of the item slot to which the item corresponds. This macro is used to quickly equip weapons and armor. So, for example, if you wanted to equip a Longsword, the macro would look like: /equip Main "Longsword"
/item "Itemname" - Where Itemname is usually a consumable item (i.e. food) you have in your inventory. This macro allows you to quickly use consumable items. For example, a macro to use a Melon Pie might look like: /item "Melon Pie" <me>
/wait # - Where # is the amount of seconds you wish to wait. This adds a delay in between multiple commands. So, for example, say you wanted to give your party a three-second warning before you used a weaponskill. The macro might look like this:
/p Using Fast Blade in 3!
/wait 3
/ws "Fast Blade" <t>
Well, that's all I can remember off the top of my head. Post on here if you have anymore questions, & good luck :)