Never lifted weights, before touching any sort of barbell, dumbell, or gimicky machine, you need to do body weight exercises first. If you can't correctly perform a free squat then why would you complicate matters by putting a heavy weight on top of you as well?
There are loads of good bodyweight exercise programs out there, (try looking up ross training). A good bodyweight (or maybe using medicine balls, bosu's, swiss balls or resistance bands if you are finding it too easy) exercise routine should be performed, so that you have a sufficient control of your body and core strength, before you start messing about with the iron.
As for your periodisation (power before strength or vice versa), I would personally recommend a phase of hypertrophy and symmetry, followed by maximal strength, then power, then power endurance.
As you're training for soccer, when you ultimately do progress to weights you'll want to use exercises that compliment what you are trying to do. Uniltateral exercises (one legged squats/deadlifts, walking lunges, bulgarian split squats etc.) will benefit you a lot.
Westsides for Skinny Bastards III would be a good program to look at.
You can find it .
Just be aware that, although in my opinion the above is what you should do, there is no 'cookie-cutter' program, listen to your body and make changes where appropriate.
Good luck, and if you don't know the answer to something, ask!
