Use the > command. To indent five lines, 5``>``>. To mark a block of lines and indent it, V``j``j``> to indent three lines (Vim only). To indent a curly-braces block, put your cursor on one of the curly braces and use >``% or from anywhere inside block use >``i``B.

If you’re copying blocks of text around and need to align the indent of a block in its new location, use ]``p instead of just p. This aligns the pasted block with the surrounding text.

Also, the shiftwidth setting allows you to control how many spaces to indent.