The best way to configure the launcher''s layout is by using the Setup Wizard. You should be prompted to open it when first launching the app, but you can also access it later from the overflow menu.
The top section of the launcher is a header with the time, date, and a graphic of a the San Francisco skyline from Google Now. This image changes based on the time of day. You can configure at what times the images change from header settings. There are now several headers available as well as an option to just use the system wallpaper instead.
Below this is the widgets section. Swipe in this area to switch widget cards. The height of this panel can be adjusted in settings. Select "Rearrange Widgets" in the overflow menu to change the order of the cards.
Below this is the favorites section. This will be empty at first, but you can add favorites by long-pressing on apps in the all apps list or shortcuts from the overflow menu. You can remove favorites by long-pressing and selecting "Remove favorite." You can also change icon size and number of columns. SF Launcher Plus users can also select an icon pack (best with ADW packs). To rearrange them, select "Rearrange Favorites" in the overflow menu.
Swipe right from the favorites section to access the list of all apps. From this page, you can long press on an app and select "Add favorite" to add it to your favorites. You can also long press and select the option to uninstall the app.
You can set a light or dark theme for the app. You can also set the theme to auto, which will cause it to change to light while showing the dawn and day images (default is 6 AM to 6 PM, although this can be changed) and change to dark while showing the dusk and night images. If you set a tap or long press action to toggle the theme, it will override the automatic theme. As of 0.5, you can opt for using the system wallpaper as your theme, with or without the header image.
If you like SF Launcher, you can now get SF Launcher Plus (https://play.google.com/store/apps/details?id=net.alamoapps.launcher.plus) for $1.99. It currently adds support for icon packs, hidden apps in the list, and font options in the header and app labels. There is also a link to it available on the settings panel for easy access. Not all icon themes will work, but most ADW-compatible themes should.
Please let me know if you have any comments, questions, or suggestions at email@example.com