As i alreadys tated, English isn't my first language and i'm mostly alone by doing everything (writing, testing and even drawing), so grammar errors are something you'll probably find. 
Luckily at the moment i found a kind soul which is helping me by proofreading and correcting the adventures and at the moment he managed to clean up everything in the Awakening Adventure. We are going to fix adventures first because taking a read to the whole Core Rules would probably require more time and since is something we both do in our free time it will just take patience.