need line follower program

Hi,my is alex. i would like to build a line follower,but i'm a very very beginner in programing.
.................=10
.................=
9=======+========7
. ................=
. ................=
4=======+========6
...............5 =
................ =
3=======+========1
.............. 2 =
..................=
start





at no. 2 robot turn left,until no 3 robot back to no 1,in the end of no 1 it go to front and turn right at no 2,it's happen too at the no 5 and no 8,and when rhe robot until no 10 it goes back to start.i use AT89C2051,L293D driver,black track,4 sensor(comparator)=>right,back,front and left.i very2 need your help,please please please n thanks 4 your help