Look at the tab where it says HOME SPELLS ARTICLES etc. click on the one that says groups join Spell Casters.
When you have joined Spell Casters you will become Council member which allows you to create spells.
Now when you have joined Spell Casters go to the tab that says HOME SPELLS ARTICLES etc. click on Spells then on the right side of the tab there should be a button that says "Create Spell"