If you want to create a league, first login, then go to the top menu, click on the show you want, and then click the "Create New League" button. From there you will be given a form to fill out about the league. That will include the league name, your own team name, what type of league you want, and the scoring categories and the points you want for each of those (you will be able to change these later as well). Once you complete the form, you will be ready to go!
Once you have created a league, you will want to invite your friends to enjoy the fun with you. To do this, you go to your league and you will see an "Invite Friends" button. All you have to do is click that and then type the emails of your friends and hit invite. This will send out an email to everyone you inputted (if they can't find the email, check the spam folder) and send them through the league join process. This will include logging in and setting a team name. It's that easy!
Depending on which league you choose (Weekly Redraft or Full Draft), you will have two different draft processes. In a weekly redraft league, you will have to set your lineup of 1-4 players every week by clicking "Set Lineup" and then choosing the players you want. These lineups will be locked right when the show starts that week. In a full draft league, you will need to set up a time with your league to draft. When you're all ready, the commissioner will hit the "Open Draft" button and that will allow people to join. The commissioner will then start the draft and will have to select the order they want everyone to draft in (everyone will draft in a snake draft). The draft will end whenever the commissioner clicks "Finish Draft" or there are no players left to draft.