Originally Posted by Elorahd
Is a garter stitch different from the regular knit stitch?
It is a straight knit stitch worked back and forth. I found a post I'll copy and paste it here:
Most common ways to increase stitches accidentally:
1. At the end of the row. Unless you keep the yarn pulled *down* and *back*, the last stitch can look like two stitches. Be sure to keep the yarn pulled down and back.
2. Splitting stitches. Slipping the needle point *into* a stitch instead of *under* the stitch can result in two stitches where there should be one. Or slipping the needle point *into* the working yarn instead of wrapping the yarn around the needle can result in two stitches where there should be one. Be careful to slip the needle point *under* the stitch, catch the working yarn completely, and pull it through making a single stitch.
3. Letting the working yarn lay over the needle. If you don't get the working yarn completely through the stitch before you slide the stitch onto the working needle, you can get a wrap of yarn that looks like a stitch and is really an incomplete stitch. If you then work into that wrap as well as in the stitch (which is actually left over from the previous row), you've added a stitch.