Doing it like this you can write descriptions or details with each picture to make a more organized presentation of something.
You can embed images from around the web using the following method but it is often viewed as bandwidth theft if you are hot linking to an image posted on another site. That is because every time a post here is opened with that embedded image it is pulling it from another site that somebody else is paying for and counts toward their overall bandwidth used.
For images of your own that you have posted on a photo sharing site like mine above that is not an issue. I pay a fixed fee for picture hosting/year and I can hotlink or embed them in forums like this without issue.
That may not always be the case for a picture hosted on a personal web page etc. In those cases it might just be better to right click and "save as" the image from another site to your local computer then use the upload method here. That means the image is stored on the Newagtalk server and is not using bandwidth someone else is paying for every time the post is opened.
With that all out of the way here is the previous post I made with screenshots of how to embed images directly into your posts here like I did above.