Font size

• How to Change the Font Size in the LaTeX book Class
  Set the book's document size with the 10pt, 11pt, or 12pt class option; use extbook for additional standard font sizes.
• How to Change the Font Size in a LaTeX Table
  Use a scoped font-size command such as small before the tabular environment, and learn when custom sizes or spacing adjustments are appropriate.
• How to Set a LaTeX Table Font to Exactly 10 pt
  Set a LaTeX table to exactly 10 pt with a local font-size declaration, or use class-relative commands such as small when an approximate size is enough.