quick question

When using the if then do multiple actions else do action does the triggering unit value refer to the if part of the action or the conditions of the trigger?

ex.

if value = 1

then set variable = variable + 1, set life of (triggering unit) = variable2 + 20

else (do nothing)

Also does adding trigger- run (this trigger) w/o checking conditions not check the if part of the action or the conditions of the trigger or both?

It applies to the condition part

When using event (unit- learns a skill), when the hero get level 2 of that skill does the event happen?

Yes, the trigger will run if the Hero gets level two or three of an ability.