I dont know what you're looking for...you've been given some good tips in the 3 threads that you have asked your question. You need to eat more, make sure your technique is sound, and change your program.
One way to go would be to change to an upper body/lower body split. With this program you train both upper body and lower body 2x per week. For example:
Monday - Legs (3x5)
Tuesday - Upper Body (3x5)
Wednesday - Off
Thursday - Legs (3x12)
Friday - Upper (3x12).
So basically, you have a heavy day and a light day for both upper and lower body. This way you're getting some endurance/hypertrophy and strength training in the same week. This is just another way to do it. Of course, if you're not eating enough you won't make any progress. Also, it's a good idea to keep a weightlifting log so you can track your weekly progress otherwise it can be kind of a guessing game when you get to the gym every day.
Just to emphasize one thing...you need to make sure your form is good on ALL exercises. Not only will this help in your strength gains, but it will also greatly reduce your risk of injury. Doing heavy squats and deadlift with bad form is a recipe for disaster. Research, watch videos, read starting strength, get critiqued, etc...don't just jump into it thinking you are using good form. If something is hurting your back, you are probably doing it wrong...don't assume it's because you're "not used to it."