Wordpress Website Insecure Content

I have just modified one of my many wordpress sites and setup an SSL certificate through my host. Made the changes to the wordpress site address from http:// to https:// All is working but when accessing the site in chrome it shows the SSL certificate but chrome says the site is not secure. Spoken with the hosting company and they said it's due to insecure content / links to http:// insecure sites etc. HOSTING PROVIDER - "For example the page code might include an image or code that pulls from a non-secure URL. To resolve this issue make sure that the page code does not pull data directly from a non-secure URL. To identify non-secure elements view the source code of the page and search for the text src=”http:// This will then highlight elements on your page being loaded from a non-secure URL. It can be possible that there are links, images on your webpage without https/or any insecure links. These are normal browser’s errors when the page on httpS:// (secure connection) is loaded, but there are some elements like images, links on that page that drives visitors to simple http:// pages (unsecured connection). Because of this browsers gives errors." I need help rectifying the problem so there is no more warnings in chrome that the site is insecure. I could do this myself but I am currently to busy with another project. Don't make bids and increase your price later, fixed bids only for this project.