Get the ESPN Fantasy Sports app
Go to the Play Store or the App Store, search for ESPN Fantasy Sports, and install the ESPN Fantasy Sports app. Then sign in or create an ESPN account, if you are a first-time user.
Click on "Football" along the top row to access ESPN Fantasy Football via the app.
How to join a public league
If you don't have enough people to create your own league, or if you just want to join one more, tap the "Join Public League" button to find a public league that fits your desires.
For detailed explanations of each setting (number of teams, scoring, draft, etc.), click here.
How to start your own league as a commissioner/league manager
Tap the "Create New League" button, then choose the settings you want to use in your league. In order to create your league, you'll need to choose your basic settings, including League Name, Scoring Type, Draft Type and Draft Date. You don't have to put too much thought into them while creating your league, because you can change all of these settings at any time.
For a detailed look at all of the basic and advanced settings, click here.
Invite friends
You can invite your friends via Twitter, Facebook, email or text message. You can also copy the invitation link to send it to them in any other manner you choose.
While it's best to invite the other managers as soon as possible, you can always create your league now and invite participants at a later date.
League manager tools
As commissioner/league manager, it's your responsibility to make sure all of your basic and advanced settings are done correctly.
You can edit the basic draft settings and add/remove managers by going to the "LEAGUE" tab and tapping on "League Manager Tools."
In order to edit advanced settings for your league (including scoring and rosters), you'll need to visit your league web page on ESPN Fantasy Football.
For a detailed look at all of the basic and advanced settings, click here.