To find good images online use google to search for images.
Use terms like “mother stays fit” and modify your search term until you pull an interesting image.

To make sure you pull up images that are large enough to use on your website click the OPTIONS tab on the right of the google page.

Now select ADVANCED SEARCH

Select larger than 800×600

Then click the ADVANCED SEARCH button to save your settings for this search

Once you have identified an image you like, click the image to expand it.

Now you can simply drag the image to the folder you like on your computer

OR
right click in a mouse ( hold down the CONTROL key and click on a trackpad)
then select the SAVE IMAGE AS from the pop up menu

and save it in the folder you want it to be.