Welcome from Bonnie Scotland!
I've been a member for ten years and fought shy of the Insert Image function for most of that time as I didn't have (or want, or understand!) a hosting site.
However a new phone with a better camera made me reconsider the rubbish tiny thumbnails I was posting.
I googled ten best free hosting sites, picked one (imgpile) and within two minutes had uploaded a test picture. A right click on this allowed me to 'copy image link'
Then on a test post here I clicked the 'Insert Image' button and right clicked between the brackets allowing me to drop the copied link and post. Done. Simples.
Don't wait ten years like me - let's see your pics now!
Sandy