I am new to triggers and I'm working on a trigger that will

1.       On new Project create,
2.       No other criteria
Actions:
1.       Follow the Account lookup field on the Project to update the Account.“Most Recent Project” lookup field with the new project
2.       Follow the Wind Energy Site lookup to update the Account. “Most Recent Project” lookup field with the new project

I havnen't had any luck. In what ways can this be accomplished?

Thank you in advance! 
Wayne