I don't think there will be any character creation information at all in the Starter Set. The free online document will only be able to make BASIC characters. Which, unless I miss my guess, means that it'll create characters with no feats, no custom backgrounds, no subraces, and maybe will be restricted to the "basic" version of each character class. Also, possibly no custom equipment.
This means that character creation will be: Roll stats, pick a race, pick a class, pick a background, write down the equipment given to you by your class and background.
In other words, character creation in 2e except with a background and equipment made easier.
If you want to have a bunch of different class options for each class, subraces, feats, and information on how to create custom backgrounds, and multiclassing...you'll likely only find them in the PHB.