Question 1 - Should i begin where is writing * HAT SCARF * or where is writing * Shaping * ??
The pattern starts with the words "Hat Scarf." This section tells you how many sts to cast on.
Question 2 - Now i am lil confused with rounds and rows, what should be for example 19 rows and 19 rounds ??
Row usually refers to an individual row, worked flat.
Round usually refers to an individual row, worked in the round.
Some people/writers interchange the two, which can be confusing, but they mean the same thing : one row = one round.
Question 3 - What mean * multiple of 5 sts * ??
A "mutiple" is any number divisible by the number given. In this case, multiples of 5 would be 5, 10, 15, 20.