we have been there before, but maybe you did not read it, or you did not understood it. So here we go again:
some informations about honeycomb cores and how to use them:http://remixshare.com/dl/so4xj/kapitel09.pdf
overview about the different production methods.
hand lay up (wet lay up), vacuum press moulding, autoclave moulding, injection mouldinghttp://remixshare.com/dl/9g4yb/kapitel01.pdf
keep in mind what flynfrog has said, he has a good and valid point - IMO
if you want/need to use a core material, use a closed cell foam or balsa wood as core. It will make your life easier.
Sorry, it´s not meaned in an offensive way, I doubt you have the technology and knowledge to use honeycomb core, for your project yet.
That´s nothing to be ashamed of, but you will need to walk, before you can run.
So do yourself a favor and start small/simple (no core construction), but start and learn your lessons along the way, while you are doing things.
You will have a better understanding, of what the challenges are, when you have laminated a part or two.
Try to produce some simple things, make a form of an cheap model car, or any other geometric shape, just to learn the technique. (form making, layout etc.)
Be prepared to throw the first two or three parts/attempts away, this is normal, and will happen.
That´s why I say, start with an easy shape, just to learn how to work with composites, and get used to the techniques.
Mind about undercut´s and the de-forming process, otherwise you way struggle to get your finished part out of your mould.
Don´t try to build a complicated part with core laminates on your first go. Chances are that you will be dissapointed, and maybe even damage your mould.
Therefore learn the processes first, and than go to more complex forms and structures.
You can even try to make some carbon fibre flat plates (maybe with a foam core)
to see, what the challenges are.
You can do this, between to glass plates (or mirrors) with a couple of heavy books to weight it up on top.
See what you can produce in terms of surface finish etc.
Have a read in the R+G book, it deals with a lot of aspects you will come across, such as mould/form making and preparation. O.K. they build a airplane model, but the processes involved are the same.
Good luck !!