2 ways to do it. Either resize or upload your pix to a photo hosting site like photobucket.
To resize, open your pic and then click on the "tools" bar and then click "resize". Change the size until it fits within the parameters for the forum 2mb for a jpeg I think?
On a photo hosting site you just open the pic and then click on the image or copy image icon and paste in your post.
BTW, welcome to the Club!