Abbreviations;
teaspoon= tsp= t.
Tablespoon= Tbsp= T.
cup= c= cp
3 teaspoons= 1 Tablespoon
4 Tablespoons =1/4 cup
8 Tablespoons butter = 4 ozs.= 1/2 cup= 1 stick
Watch these videos for measuring basics
https://www.youtube.com/watch?v=viMN79_42AE
https://www.youtube.com/watch?v=0v-ulU_mi7o