How do I find out the additional 3 effects of ingredients?

Trial and error by brewing potions. If you match 2 ingredients that have an effect in common, you produce a potion/poison of that effect. There is also the Experimenter perk in the alchemy tree which lets you see more effects by just eating the ingredients.

This webapp will help you figure out available combinations based on the ingredients you have. this is an APP i use to figure out what ingrediants do what and what potion is worth more since leveling in alchemy is determined by this. i'm a new user just trying to share a resource since i haven't seen one like it listed on here...