OK, it is really simple and is better than nothing at all.

To adjust your timing:

You will need a 7/16 O/E Spanner
and a mirror - preferably one on a flexible handle etc.
Spark plug socket
ratchet handle for the spark plug socket
O/E spanner for the little cover on the flywheel so that you can see the timing marks (can't remember the size - maybe 1/2"???).

1) Do this on some nice flat ground.

2) Take the plug leads off the plugs. (mark them if you have to - I know which order mine come out of the cap so I don't have to mark mine).

3) use the spark plug socket to take out all 4 spark plugs

4) put the car in 4th gear without the hand brake on.

5) push or pull the car in one direction while looking into the inspection cover in the flywheel housing with the aid of the mirror after you have taken the inspection cover off the flywheel housing.

6) line up the little pointer in the flywheel cover with the 1/4 mark on the flywheel.

7) get your 12V test light or multimeter and hook it to a good earth (I use the engine earth strap).

8 ) get in the car and put it on ign or acc etc - just get some power to the car but DON'T bother cranking it over - it won't start (remember we took the plugs out).

9) touch the 12V test light to the distributor side of the coil - it should be alight (or reading somewhere around 12V for a multimeter).

10) Push the car backwards (slowly) and watch for the test light to go off (make sure the car won't keep rolling when you stop pushing.

11) use the mirror to have a look in the inspection hole, where the pointer in the cover points to is how many °BTDC the spark fires. Use your manual to check the correct setting. Figure on somewhere between 3° - 7°.

12) If it's not set to where it should be the undo the clamp (don't take the nut all the way off, just so that it's loose) on the distributor with the 7/16th O/E spanner you got out earlier and then twist the dizzy body with your hand. If you want to advance the ignition timing - twist the dizzy CLOCKWISE (i.e. the number shown on the flywheel will get bigger next time you push the car backwards). If you want the number on the flywheel to get smaller (i.e. retard the ignition timing then turn the dizzy body ANTI-CLOCKWISE).

The dizzy only need a little tiny turn - not a really big one.

13) Don't touch the dizzy body now and don't do up the clamp bolt yet.

14) Pull the car forward again so that the test light comes on or your multimeter reads 12V.

15) Repeat from step 10 and see what you get this time. Repeat as many times as nessasary to get the corrent number happening.

16) Once you are happy with the timing I do up the nut on the clamp and then re-test the timing just to make sure I didn't bump the dizzy when doing the nut back up.

17) Turn the key to fully off (so there isn't power to the coil anymore).

18 ) Put the plugs back in and put the leads on in the correct order.

19) Do the inspection cover back up (I loosen one side and take the bolt out of the other, it will swing down for you and you won't have to take the whole thing off).

20) Remove your earth clamp that is currently attaching the test light to the earth strap on the vehicle.

21) Kick it in the guts to make sure you didn't stuff it up too bad

That should help you out I don't think I've forgotten anything but that is how I statically time my car.