Hi, GASmooth
Welcome to the forum.Here you will find alot of info about the pheromones and ways to use them. 
I can add to the info witch others here gave you that IG is really cool product and it’s not that it makes you more mature, but more glowing , serious and manly without being too much bossy and authoritive as a314 is.This product makes all the women just melt around you and guys to respect you more without feeling that u have higher rank and u’re “too good to hang out with them”.The effects from both guys and girls are just awesome.I find it’s best to be used from 2 to 3 sprays.
As for help in shyness - well only pheros probably will not be enough but as for the products witch can help you in talking to people u just met - u should consider CTTM2.
It’s a product witch makes you and those around you to be more chatty and to be willing to talk more.Describing it with one phrase - “Talk is in the air”.
I had many times longer and deeper conversations with total strangers with that product and it’s great as an icebreaker with new acquaintances.I find that my sweet spot is around 3-4 sprays.
U can read my experiences with this product in the link in my signature.
As for making combinations of pheromones - well here is a chart witch describes the effects from mixing different products and what the outcome would be :
One of my favourite combos are :
A314+CTTM2 ( 2 drops 3-4 sprays) or IG and CTTM2 ( 3 sprays IG, 3 -4 sprays CTTM2).When I need more authoritive vibe I use the A314 combination and if I need more social and cool vibe I use the IG one.As for the dosages - those I’ve written above work best for me but because everyone has it’s own sweet spots my dosages might not be suitable to you.U should find you own sweet spots.
If u have any additional questions - just ask and the users on this forum will be glad to help you.Have fun.