creating links to other pages from 1 main page

You should be able to do this:

1. Edit the page/post.
2. Highlight the word(s) you want to appear in the link.
3. Click the link icon (looks like a chain link).
4. Click ‘Or link to existing content’ near the bottom of the popup.
5. Either search for your target or scroll until you find it.
6. Click on the target.
7. Click ‘Add Link’.