Today I want to introduce two-stranded tubular cast-on method, which many knitters may be familiar with but still a very useful technique to know. Many knitting patterns simply tell you to cast on for the ribbing, but the finished knitting won’t stretch enough at the rib edges and that one would have difficulty wearing it or taking it off.
Two stranded tubular cast-on method enables the ribbing edge to stretch and recover well. This is perfect for cuffs, waist band, neck line etc. It also has a neat finish which looks the same both on the right (RS) or the wrong side (WS) of the garment.

Method:
As usual for knitting in rib, work with needles 2-3 sizes less than the actual needles used for the yarn. I have a video tutorial which might be helpful

Step 1: Make a slip knot, leaving a free end approx. 4 times the desired width. Insert a needle though the loop. This counts as a first stitch.
Step 2: Hold the yarn on your left hand. The free end around the thumb and the main yarn on the first finger. The needle is located in between the thumb and the first finger.
Step 3: Flick the needle forward in front of the free end, then loop under it. Bring the needle over behind the main yarn, loop under it. You have just made a knit stitch.
Step 4: Flick the needle backward, behind the main yarn, then under it. Bring the needle over, in front of the free end, loop back under it. You have just made a purl stitch.

You now have a first stitch (that you made in step 1), a K stitch (in step 3) and a P stitch (in step 4). If you being with step 4, then you would have the first stitch, P then K.Repeat step 3 and 4 until you have the desired number of stitches. Tie the 2 strands under the needle after the last stitch.
When you are ready to turn the work to knit the second row, make sure you K, if you finished the last stitch on step 4, or P if you end the last stitch at step 3.

Additional Tip:
For a tighter edging, work 1-2 rows by slide the purl stitch purl-wise with yarn in front.