Having 'Read More' on Homepage and 1 Other Page

Hi all,

Website: Mosaic Online
We are looking to add ‘Read More’ functionality to the long posts on our homepage and also one other page. The homepage ones are not ‘Posts’ according to WordPress, but rather just a part of the page. The ones on the other page will need to be WordPress Posts, perhaps with a Tag, and need to show up on the blog as well.

Any thoughts on the neatest way of implementing this?