ThoughtCo: What is Shavuot?
Aish haTorah: Shavuot (links to assorted articles)
Aish haTorah: Crash Course in Shavuout – ABCs of Shavuot
Aish haTorah: The Book of Ruth: A Mystery Unraveled
Aish haTorah: The 10 Commandments for Our Time
Aish haTorah Crash Course in Jewish History: Mount Sinai
Being Jewish: Shavuos Gateway (links to assorted articles)
Chabad: What is Shavuot?
Holidays.net: Shavuot on the Net
Jacob Richman: Shavuot (categorised links to assorted other sites)
Jewish Agency: Shavuot Customs
Jewish Agency: Megillat Ruth (the Book of Ruth)
Jewish Magazine: Shavuot Archive Page
Jewish Virtual Library: Shavu’ot
Judaism 101: Shavuot
My Jewish Learning: Shavuot 101
Ohr Somayach: Shavuot (links to Ohr Somayach pages about Shavuot)
Project Genesis (Torah.org): Shavuos, a Mount Sinai Wedding (includes links to further articles about Shavuot)
Rabbi Scheinerman: Shavuot
Rabbi Yitz Wyne: Unlocking the Mysteries of Shavuot
Teacher Planet: Shavuot Resource Page (includes lessons/teaching units and worksheets)
Torah from Dixie: Shavuot (links to assorted articles)
Virtual Jerusalem: Shavuot
Children’s Activities for Shavuot
Chabad: Shavuot Crafts & Art Projects
OU(Orthodox Union): Children’s Shavuot Activities
Torah Tots: Shavuot
Recipes for Shavuot
Note: some recipes list gelatin as an ingredient. Many commercially prepared gelatins are not kosher; only gelatin with a hechsher (kosher certificate) may be considered reliably kosher.
Also note: Blintzes (crepes or thin pancakes) are traditionally eaten on Shavuot. They have a filling, often cheese, but many other types of filling are also possible.