I have a feeling my ignition system is the problem, my 1998 honda civic won't start.
But how do I trouble shoot the ignition coil before I replace it?

What are your symptoms ? The best way to trouble shoot is with a repair manual sold at your local parts store. It will give you all applicable factory specs and repair procedures. Its thye first thing I purchase when I get a different vehicle. Sorry but I don't have one on hondas yet. GOOD LUCK,AC

Perform tests, in Sections 1 and 2, below:

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-hondas-selected-other-vehicles-46563.html