var paras = $("p");
paras.first() // Select only the first <p> tag
paras.last() // Select only the last <p>
paras.eq(1) // Select the second <p>
paras.eq(-2) // Select the second to last <p>
paras[1] // The second <p> tag, itself

$("h1").css("font-weight"); // Get font weight of 1st <h1>
$("h1").css("fontWeight"); // Camel case works, too
$("h1").css("font"); // ERROR: can't query compound style
$("h1").css("font-variant", // Set style on all <h1> tags
            "smallcaps");
$("div.note").css("border", // Okay to set compound styles
                  "solid black 2px");
// Set multiple styles at once
$("h1").css({ backgroundColor: "black",
              textColor: "white",
              fontVariant: "small-caps",
              padding: "10px 2px 4px 20px",
              border: "dotted black 4px" });
// Increase all <h1> font sizes by 25%
$("h1").css("font-size", function(i,curval) {
             return Math.round(1.25*parseInt(curval));
});