For me, focus on a few core exercises, focus on getting your form nailed (upload some video if you want us to critique your form), focus on building some raw power, and size should follow. I prefer to keep things simple personally, and would only train legs once per week, but hammer them. If you do it right you should be too tired and/or sore to train legs again within 3 or 4 days.
Back squat
Probably 3 warm up sets and 2 or 3 work sets. Heavy set should fail at 6 to 10 reps. Any less and the weight is too heavy, hit 10+ reps and up the weight for next time. keep your form right, and make sure you go all the way down (think ass to ground). Too many people ego lift on squat and do partials (I was guilty of this when doing my heaviest every reps at circa 220-230kg)
Then for me I move to leg press, leg extension, leg curl, seated calf raise, standing calf raise then done.
All with 6-10 rep range on heavy sets for me, but some people get better results from higher rep range in legs. So experiment and find what works best for you.