You should have marks like this on your crank pulley:

The white mark that is off by itself is TDC, and you line that up with the pointer on the block. The other white mark is whatever your stock ignition timing is, and the red and green marks on either side of it are +/- 2 degrees. The numbers in this pic are for a B18C, so yours will vary. Also, the actual color of the marks on your crank pulley will also vary. On mine, the TDC mark is white, the stock timing mark is red, and the +/- 2 degrees marks are brown.
You can see the marks on the crank pulley from above, which is how you would set ignition timing:

Look down toward the crank pulley, then look at the block, and you should see a little triangle shaped pointer sticking out. When the white TDC mark on the pulley lines up with the pointer, cyl #1 is at TDC. Your cam gear(s) will also be pointing up(with the UP marks at the 12 o'clock position.