hi will the actor, its true you do like to go on :) lol steemit is ace and I am sure you will have a lot to post about.
to add pictures to you post is quite easy, all you do is go to select images and that will open up your window, choose the image you want and double click. this then will take a few seconds to upload the image.
you can also drag and drop if you want.
and also go to a 3rd party website like pixabay.com and right click and choose image address and copy and paste into your blog post. hope this all help :)