You can sign up here.
Step 1:
https://fantasy.premierleague.com/ (just need an email address to sign up or Facebook too)
Step 2: Select your team. You have $100 million cap to play with and each player is assigned a value. You must make a team before you can join a league. Don't worry too much about selecting the perfect team before joining the Pitch Howlers League as you can change your team as many times as you want before GameWeek 1.
Step 3: Once your preliminary team is selected then you can join Pitch Howlers League. The code to join Pitch Howlers is 1474835-363071.
Step 4. Rearrange your team as you want. Select a captain and read the rules about scoring... how to transfer players weekly... and such. If you have any questions, feel free to ask. If you join the league and have Facebook, friend Pitch Howlers so you will receive all weekly updates and goodies.