Bobbi Brown Skin Foundation Spf 15: how to use and alternatives?

Hi guys! I just got the Bobbi Brown Skin foundation since it felt like it was a very natural look with sheer coverage and with a bit more help wouild last all day on me. However, I am just confused as to how to best apply this product, so any help in this department wouild be appreciated. Also if there are foundations that have all the qualities this does, I would love to know about them!