Facebook Targeting

Hi!
I hope this is the right place for me to post here.
I am starting a shirt business and would like to learn about Facebook targeting tip and tactics
My last attempt failed miserably.
I am also looking for the best support and experts, if you happen to know
I have been viewing a good course on skillshare about page optimization.
I hope you guys can help me ?

IMO If your starting an online business you should profit first without any Ads. I would look into using MassPlanner to your full advantage.