As @Josephine_van_Rijn said, my recipes are public and to cut down on time (I have 100s), here is a great introduction to Taro. If you don’t like this one, taro isn’t for you.
The Taro Card
Damn copy as HTML never works for me on this site!?! Anyways, give that one a go.
The standard percentages for TFA Taro are at, or around, 2%.
Only if you want to fry your taste buds and taste nothing but yam until your late 80s! FLV yam is VERY potent. I can’t stress this enough. The window for [very] noticeable flavor is .2-.6% Not 2-6%. .20-.60%
I’m not sure what manufacturers you have of these flavors, outside of vanilla swirl being TFA. Just remember that not all flavor types are created equal. It would make life so much simpler in the beginning, if it was. Some vanilla custards are shit, while others are perfect.
Again, it really depends on the company. If you go to the recipe side of the site and look up your flavors (by manufacturer), it will give you a vague jumping off point.
There is also a lot of other things in play when deciding %s. For example, the yam being a very potent flavor, it may need more of the VBIC to “break through” that potency. Whereas a more delicate flavor, say Strawberry Ripe, would be the opposite.
The best thing I can tell you being new to mixing, is know your flavors inside and out. This site is good for giving you general information, but ultimately it is up to you to decide what works for you, where your sweet spot is, and how various flavors play together. Trial and error, plus lots of time and patience. More of the latter than anything.
Hope this helps. Feel free to hit me up, if need be. It’s been a while since I’ve had an apprentice. I’m about due