[Laird Scooby]

The easy way (and also saves forum space) is to use a third party hosting service such as postimages.org

Copy that URL into your browser and load it up, set up a free account (very quick and easy, even for me and i'm a complete numpty with software) and then follow the on-screen instructions to upload the pics to their site.

When you want to use one of those pics in a post, open postimages in a new tab from the post you're creating and find the image you want to show.
Above the image will be the Share symbol, a bit like a V on its side. Click that and a list of links will appear. At the end of each link is a blue button. You need the "Hotlink for forums" link to post on here so find that link in the list, go to the end and click the blue button which should change to "Copied".

Go back to the tab with your post in and click in the post where you want it to appear, right-click your mouse and then click "Paste" followed y Return/Enter twice to leave a blank line under the pic before continuing with your words.

The big benefit of using a third-party host is if you want to post the same pics on another forum or email them to someone as they are all in one place, also useful for storage in case you have a problem with your own PC as they are stored elsewhere so are safe.