In knitting, the term "yfwd" is an abbreviation for "yarn forward." In order to do a yarn forward, simply pull the yarn strand with which you are knitting between the needles to the front of the work, so that it is in the position normally used when preparing to perform a purl stitch. That's all there is to it!
Yes.
First of all, the yfwd on the previous row: I'm guessing that there was a double yfwd on the previous row. Whenever you work double yarn forwards (yfwd) or (more commonly) yarn overs (yo), on the next row the 2 yo/yfwd loops are alternately knitted and purled. This makes a nice big - and neat - lace hole.
"Yfwd" typically stands for "your forward," often used in digital communication to indicate that someone is forwarding a message or content to another person. It can also be an informal shorthand in texting or online chats. The specific meaning can vary depending on the context in which it is used.
P3 means to do 3 purl stitches.
yrn is the abbreviation for 'yarn' - the material you are knitting or crocheting with
Grameen is the name of a knitting factory in Dhaka, Bangladesh.
k1tbl1
slip
A marker is a ring placed on a knitting needle between two stitches to remind the knitting that something is supposed to happen there.
Ch 3 means make three chains, but is a crochet rather than a knitting term.
There are no abbreviations in knitting which uses "mds." The questioner may have meant to say "rnds" which means "rounds."