Good pics, like today's SAKtivity are well within the reach of folks with no skills!
All you are going to need is 4 sheets of regular old printer paper and some scotch tape. I am sure that folks more knowledgeable than me can tell you about the merits of various types of printer paper (bond, brightness etc) but I used a few pages of the stuff that I got on sale at Staples a few months ago. Nothing special. This is going to be the everyman's lightbox.
Step One- Fold the first two sheets of paper in half.
Step Two- Tape the ends of the folded pages together.
Step Three- Tape the side of the third sheet of paper to the other two, with the joint of the first two in the center of the third sheet.
Step Four- Do the same with the fourth sheet, only this time, on the other side of the first two sheets.
Step Five- You should now have something that looks like this
Step Six- Flip the whole thing over and start taping corners together until you have a box.
Step Seven- I like to fold in an inch or so on either side of the box to add rigidity and to give reflective surfaces something white to reflect. I also like to fold the top back a little bit to act as a shade if needed.
There you go- a fast and cheap (and reasonably effective) light box. I usually just use it to even out natural light, but I have also used it in darker times by "hiding" LED Mag Lights in behind the folded side panels. The name of the game here is experimentation. I have had some good shots and some bad shots with this setup, but I am sure that has more to do with the faulty equipment behind the camera than anything else!
Good luck, and lets see those pictures!