To say this is a vague question is a severe understatement. So I'll just say:
Remember that you'll be lifting for years, not weeks. Long-term goals are awesome and will help define the bigger picture that your short-term goals will lead towards.
Give nutrition the same amount of mental energy and attention that you give training.
I'm presuming you're a girl so, when it comes to lifting, forget that you're a girl. Do all the big lifts like deadlifts and bench presses with barbells and dumbbells. Lift heavy and lower rep (into the 2-4 rep range) in addition to more moderate rep work. Don't fall into the trap of lots of machine-based work (for cardio or strength training) or lots of lightweight 15 to 20-rep sets.