Today was my first solo flight taking off and flying outside of Livermore. I went to Byron, then Tracy and back.

As I requested frequency change approaching brushy peak, tower alerted me to traffic in the opposite direction which I never was able to locate. After touching down at Byron, I taxied off to reset for the leg to Tracy. On the way back to Livermore as I approached Altamont, tower first alerted me to a traffic 1mi south for straight in to 25R and asked me to report for a 2mi  right base implying I had to turn right towards brushy peak. Then tower changed the instructions to make a right 360 and then straight in for 25R.