Learning even just the basics of photography takes a bit of work and one of the more complex ideas is the relationship between ISO, aperture, and shutter speed. Lifehack has a graphic that helps make sense of it.
For Lauren's bath - tub/shower combo. This tub is nice - not wanting the builders grade tub and shower door thing Small space luxury bathroom remodel. LOVE the soaker tub/shower. Best of both worlds! Luxury and reality!