There are a number of ways to upload a photo to your profile.
Uploading a file on my computer:
To add a photo, go to 'Profile' and click on 'Photos.' Then click 'Upload a new photo.' Next, click the 'Choose file' button to find the photo you want to use from your computer. Once this is selected click on the 'Open' button which will put the file name and path in the text box on the web page. It is then just a case of clicking the 'Upload Photo' button to upload your picture.
Uploading a photo from my mobile:
To upload photos from your mobile, go to 'Account' then 'Update your profile'. On the ‘Profile' dropdown select ‘Manage photos'. The option to upload a photo will appear on the right side of the page. You will be able to upload photos straight from your mobile onto the site from here.