Slip sts WYIF?

Instructions:
Note:

  1. Slip sts WYIF

CO 30 sts
Rows 1, 2 and 3: sl 1, k across.

I am not sure what it means when it says “Slip sts WYIF”.
This is what I am thinking when we are doing Row 1,2, and 3 is “sl 1 WYIF, knit till to the end”.
Is that mean they are increasing 1 sts on each row?
CO 30
Row 1 will have 31sts, Row 2 will have 32 sts and Row 3 will have 33 sts?

And also when it say “sl 1”, should I do in purlwise or knitwise?

Thanks a lot

WYAF=with yarn in front

Normally when you knit a stitch the yarn is held in back. Therefore, when you slip a stich knitwise the yarn should be held in back.
In this case, you are being told to do something different than normal, you are to hold the yarn in front. What this will do is create a small bar that is visible on that side of the work. Simply work the prior stitch as instructed, then pull the yarn to the front between the needles, slip the stitch, then work the next stitch as instructed (this may require returning/moving the yarn to the back to knit).

When you are told to slip a stitch with out specifically being told to knit or purl, it means to slip knitwise.

Just slip the first st with the yarn in front, then knit the rest of the sts.

It seem like I am increasing the sts on the rows.
Here is what I am doing…
I slip the 1st st knitwise, and put the working yarn in front of me. Then I knit the 2nd st. From here, it increase 1 st between 1st st and 2nd st.

What I am confused about is that I seem to be increasing.
And I am not sure if that is right.

You’re supposed to move the yarn to the back [I]between[/I] the needles, like going from a purl to a knit; taking it over the top makes a yarnover.