Setting the expires header is a great way to enable browser based caching, which should help make some pages load faster. Here is the code how to do it in .htaccess.

<IfModule mod_expires.c>
        ExpiresActive on
        ExpiresDefault                                    "access plus 1 month"
    # TEXT STUFF
        ExpiresByType text/css                            "access plus 1 year"
        ExpiresByType application/json                    "access plus 0 seconds"
        ExpiresByType application/xml                     "access plus 0 seconds"
        ExpiresByType text/xml                            "access plus 0 seconds"
    # FAVICON
        ExpiresByType image/x-icon                        "access plus 1 week"
    # HTML
        ExpiresByType text/html                           "access plus 0 seconds"
    # JAVASCRIPT
        ExpiresByType application/javascript              "access plus 1 year"
    # FONTS
        ExpiresByType application/font-woff2              "access plus 1 month"
        ExpiresByType application/font-woff               "access plus 1 month"
        ExpiresByType application/vnd.ms-fontobject       "access plus 1 month"
        ExpiresByType application/x-font-ttf              "access plus 1 month"
        ExpiresByType font/opentype                       "access plus 1 month"
        ExpiresByType image/svg+xml                       "access plus 1 month"
        ExpiresByType application/x-web-app-manifest+json "access plus 0 seconds"
        ExpiresByType text/cache-manifest                 "access plus 0 seconds"
        ExpiresByType audio/ogg                           "access plus 1 month"
        ExpiresByType image/gif                           "access plus 1 month"
        ExpiresByType image/jpeg                          "access plus 1 month"
        ExpiresByType image/png                           "access plus 1 month"
        ExpiresByType video/mp4                           "access plus 1 month"
        ExpiresByType video/ogg                           "access plus 1 month"
        ExpiresByType video/webm                          "access plus 1 month"
        ExpiresByType application/atom+xml                "access plus 1 hour"
        ExpiresByType application/rss+xml                 "access plus 1 hour"
</IfModule>