The tutorial is in the NBA TODAY section along with the create a player. One you go to NBA TODAY, press the back button and you'll see them. You can't edit players unless you enter th he myplayer or mygm modes.
There unfortunately doesn't seem to be the usual moves tutorial this year, instead you got the "2KU" videos under NBA Today. They have NBA players going over some of the controls in it, but you can't practice what you're shown step by step. There is a freestyle you can go into but that's not quite as convenient to learn from...
As for rosters, go to Options section from the main menu. Rosters/draft editing is all there.
-Go to features
-Go to Roster Creator
-Select Create Roster
-Select the Official Roster (not from the list with all user submissions, but one of the 2 tabs where is says Official Roster and Injury Free Roster)
-Name your save file
-Back out and go to Edit Roster
-Select your locally saved roster
-Here you'll be free to edit rosters, player movement , rotations, coach settings, playbook, etc
-Save your changes
Keep in mind when you go to play, the default roster is the 2K one. You'll need to select your locally saved one.
Hope this helps.
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