No apologies necessary! Happy to have you along.

Let's see if I can explain easily...
Well first to get the "address" of the particular post to which you want to link you click on the # in the upper right hand corner of hte post. For example it would be "#148" on the post you just left. A separate window will open for just that post and you can copy the address from the address bar or whatever it is called.
Then you go to whatever post you want to leave a link in. I generally do this with several windows open so I can go back and forth easily.
Then you type the words that you want to be a link. For example "day 2 part I" and then put your cursor over those words and highlight them.
Then go to the top of the post window where you'd select font, size, coloro etc. and click on the little globe with the link under them (it's right under the smiley face). A new window will open and you can paste in the address that you had copied before for that single post.
Hope this makes sense!