Crochet shawl PATTERN includes over 30 detailed photos of working procedure and description “step by step”. A beginning crocheter could easily follow it.

Finer yarn such as sock yarn, baby yarn,fingering.
Yarn consumption is about 3x 100g ball, using yarn with about 300 m / 100 g.
Better to buy one ball of yarn more.

Crochet hook is 3mm or 3.5mm or 4 mm to suit your yarn.( read label)

BUT it is better to use 1 size bigger crochet hook, if the label indicate sizes only for knitting needles.
FOR INSTANCE: Needles 3mm – you will use crochet hook 4mm