It will be best to use photos that are no wider than 800 pixels if possible.
Log in to your website with the with the credentials you have been given.
Once you are in the Dashboard, look for “Media” to the left. Click it.
Look for “Add New” near the top of the screen.
You will see a button that says “Select Files.” Click it.
Browse your files and upload the photos you would like to add.
Next, find “Pages” to the left and click on it.
Look for “Gallery” in the list of pages and click on it.
Scroll down until you see a gray bar that says “Gallery.” Click on the three horizontal lines on the left side of that bar.
You will see a black button that says “Update Gallery.” Click it.
You will see a link on the left that says “Add to Gallery.” Click it.
This will show your entire media library. Find the photos you just uploaded (they should be at or near the top) and select each one you want to add to the gallery.
Once you have selected the photos you want to add, look for a blue button on the lower right side that says “Add to gallery.” Click it.
Once you do this, you will be able to move around the photos in your gallery (“drag and drop”) or delete photos from the gallery.
Once you are satisfied with the content and order of the gallery, look for the blue button in the bottom right corner that says “Update gallery” and click it.
Now find the green button that says “Save and Exit” and click it.
Finally, scroll up to the blue update button on the right and click it.
Check your gallery on the front end of your website.