How do you use skills in seven swords

This took me awhile to figure out but here's what to do:
First, make sure you know what ability you want to have.

Second, go to your bag and click on your weapon. You will see these three options on the left of your weapon's stats: "SET" - "FIX" - and "BLD". You will need to select the "SET" option.

An Expansion menu will pop up, and from there, it asks you to select the items you wish to install. To the left, you should see the skill that you purchased. Click on the skill and it should take one of the slots to the right.

Once you are happy with setting your skills, select "Set" on the bottom, and now you can use your skill in combat!

Here's how to use your skill in combat: if you look on the bottom right side of your screen, you will see your melee attack, and your class-specific attack in the two small circles, and then there's that big circle. You should press, hold, and slide your finger on the big circle, giving you the option of changing the skill that is in that circle.

Just select the skill you equipped and bam! You can now use your new skill!

NOTE: If the skill you're using targets an area and not a specific target, you will need to press the skill, then select the target you wish to use the area spell on. This will take some getting used-to, but skills are a big help in this MMORPG!

I hope this answers your question, and any others out there, about using the skills in Seven Swords! :)