1997 Honda Civic Slow starting

Scan the vehicle to make sure there are no stored DTC's, as a stored dtc could really help with diagnosis.

I would check to ensure you have strong spark, ensure all the secondary ignition parts are in working order (spark plug wires, cap, rotor, plugs). Make sure you have proper fuel pressure at the rail (must have a fuel pressure gauge for this).

Also I'd crank the vehicle with the throttle open a bit, to see if this helps starting it. If it does you may be running too rich OR the IACV may be acting up on you.