Before you crochet the foundation chain, you should wind your floss into a ball, and string your beads onto your floss.
Next, chain 3 (View I.)
Then work 1 beaded chain stitch. To work the beaded chain stitch, first slide a bead right up next to your work so that it is touching the piece in progress.(View J.)Then work your chain stitch. You’ll work it just as you usually would, except that there’s a bead in the stitch; just reach overtop of the bead, grab your yarn and pull the loop through. (View K.)
As you can see from view K, the bead is going to fall to the back of your work. If you flip it over and look at it from the other side, you'll see something resembling view L.
Work 3 more chains, and then another beaded chain. Keep repeating those steps until your foundation chain is the length desired, then work 3 more chains. My sample necklace had 28 beads at this point – 115 sts all together. View M shows a close-up of of my foundation chain -- note that I photographed the beaded side; the beads all fell to the back as I was crocheting.
Go to the next page of the tutorial: Page 4, How to crochet row 1 of the beaded necklace