As with anything else you read, whether on paper or digitally, use your discretion and common sense, and take away from sources with good vibes what feels good to you, and ignore that which doesn’t. That doesn’t mean you shouldn’t give it a look over first to decide whether or not to accept the information, but it’s ultimately up to you.
Trust your heart and your gut.
Ogham for Learning/Understanding
http://www.ecoenchantments.co.uk/myogham_intropage.html (my favorite)
History, Background and Script Info