Sefer Ha’mitzvos Ha’Katzar (The concise book of mitzvos) By the Chofetz Chaim
This book lists the Torah mitzvos that can be observed today
First Section – the Positive Commandments
28. It is a positive commandment to rest from work on Shavuos
As it says in Vayikra (Leviticus) 23:21,”And you shall call it on this very day, a day of holiness.”
This applies in all places and at all times, for men and for women.
4. Be kind to yourself. Speaking badly even about yourself is unethical.
הלכות שמירת הלשון 