Typically on a cPanel host your access logs are kept in

/usr/local/apache/domlogs/username/incredigeek.com

Where username is your cPanel username and incredigeek.com is your website.

To view the logs you can use tail -f to follow the log.

tail -f /usr/local/apache/domlogs/username/incredigeek.com

You can also use grep to search the logs.

grep "text to search" /usr/local/apache/domlogs/username/incredigeek.com