How to change Transmission fluid on 2000 Civic

I don't have a manual but I think I need to change the fluid. I can't
find it underneath, do I need to take off the skirt?

 

Go here:
https://techinfo.honda.com/rjanisis/logon.asp

Click on "Owner's Manuals" from the menu at left (no login required), then
navigate to your car. The instructions on how to change the transmission
fluid are there.

You can save all the PDF files that make up this manual and print it out
for yourself.

 

thanks but when I download the doc it only gives me the table of
contents. Is there any trick to it?

 

There is.

Click on the first thing in the Table of Contents. See the number of pages
reported in the PDF window? Click the right-facing arrow at upper right
until the count changes. At that point, it's a new PDF with its own group
of pages. The PDF page groupings come over in batches. You need to save
each PDF separately (click the floppy disk icon in the PDF window).

PITA? For sure. But it beats paying the dealer for a paper copy.