The following are installation options for different body shapes as well as underwear styles.
All of these shapes support the weight slider from 0% to 100% in the game.

Shape Options
Slim: Default CBBE body with a natural shape of slimmer ladies.
Curvy: Based on the original CBBE, more voluptuous than Slim, but still realistic in its proportions.
Vanilla: Based on the Vanilla body made to work with CBBE textures. Thicker waist, lowered breasts and more defined pelvis region.
NeverNude: Vanilla-styled underwear.
Underwear: Modern style underwear in five colours (black, purple, red, light blue, and a plain grey) and an optional more revealing style.
More options available with BodySlide, including zaps for the Underwear and many outfits.

For more presets, have a look at Jeir's CBBE Presets Compendium (shameless plug. Sorry not sorry.).

Skin Options
Default Skin: Clean, smooth and hairless textures.
Pubic Hair: Default textures with pubic hair.

For more texture options, such as innies or dirt, check out the resources in the misc. files section.
If you want to use entirely different skin textures for CBBE, check out the list of compatible mods!

Normal Map Options
Base: Default normal map that comes with the main CBBE installer. Works well enough for a lot of body shapes.
Petite: Less shading for the breast area compared to the base map. Better for body shapes with much smaller breasts.
Curvier: More shading for the breast area compared to the base map. Better for body shapes with larger breasts.
Cleavage: More shading for the upper breast area to provide a nice look of cleavage. Works well for outfits.
SevenBase: Shading that matches the SevenBase body shape. Recommended to use only with CBBE SevenBase preset from BodySlide.
SevenBase Muscular: Same as SevenBase, but with muscle definition.
Muscular: Provides abs and a little bit of definition for the inner thighs and butt.
Fetish: More defined nipple and areola shape. A little bit of abs and curvy breasts. Recommended to use with matching preset from BodySlide.

Physics & Special Body
After installing CBBE, your BodySlide will have a new entry "CBBE Body Physics".
It's only available in BodySlide, not in the main CBBE installer.

Installation of the Unofficial Skyrim Special Edition Patch (USSEP) is highly advised to fix a lot of issues related to vanilla outfits (and the game in general).

Manual
1.Download the main file archive and open it with 7-zip. Do not use anything but 7-zip.
2.Install the contents of the 00 Required (Slim) folder into the Data folder of your game installation.
3.Install the contents of the body you want (one of folders 01-05) or the underwear (20-25) into the Data folder.
4.Install the contents of the outfit replacers you want (06-10) into the Data folder, according to what body shape you're using.
5.Recommended: Install the contents of the Face Pack folder into the Data folder.
6.Optional: Install the contents of the pubic hair or underwear recolor folders into the Data folder.
7.Optional: Download and install the normal map options file to make sure your body looks perfect for your preferred shape.

Wrye Bash
1.Download CBBE and open Wyre Bash.
2.Move/copy the CBBE archive into your Installers tab.
3.Check the boxes of what you wish to install in the Sub-Packages pane (see Manual installation section for details).
4.Right click the archive and 'Install'.
OR.
1.Download the CBBE SSE Wizard.txt from Mertz's WizBAIN thread.
2.Rename the CBBE SSE Wizard.txt to wizard.txt.
3.Download and open the CBBE archive with 7zip.
4.Move/copy the wizard.txt into the archive (do not put it into any folders within the archive).
5.Open Wrye Bash, then move/copy the CBBE archive into the Installers pane.
6.Right click the CBBE archive and select 'Wizard'.
7.Follow the instructions.