Folders for work:
church_10_visual_research
church_11_site_structure
church_12_color_palette
church_13_sketches
church_14_photo_image_collection
church_21_design_prototype
church_22_html_with_design_image
church_31_slicing
church_32_code_html_css
church_33_navigation_etc



slice (3rd left)
File > Export > Save for Web (legacy)

:: important
File > New > Document Type (Web)
View > Rulers
Window > Info (change to pixels)

:: Groups
curtain
content
middle navigation
title and top navigation
background

:: guides
view > new guides (to key in position)
view > new guide layout (change preset to create quickly)

Change canvas color
choose foreground color, use paint bucket tool (under gradient)
add a layer under artboard 
use paint bucket tool to click on it

horizontal guides:
15, 22, 40, 64, 80, 220, 235, 300, 315, 380, 395, 410, 675, 690, 692, 706, 721, 738
768 - last one