Getting started: Need a kit

I want to learn how to apply fusion strand b strand.  The flat tip.  I guess the most ecconomical way would be to put those on myself right? 

First do you buy hair "bulk" and apply the keritan?  How is it done?  What hair to you buy?

And what "kit" would i look for?  there are kits for applying the tips and applying the hair.  Right?  they are separate?  If I'm going to re-apply the hair, I imagine i would need the kit to apply the tips anyway.

I just want to know what materials I need to get started.  I don't want to miss anything.

I've seen tutorials online that you purchase.  I'm good with hair so I'm sure I would catch on.  My daughter does hair and would also give this a try and make $$ on the side.