Can you help

This blog getting so busy - currently 39 posts and 21 pages. 

I'm sure a lot of visitors to my blog won't go all the way back to the first posts. - which are still very interesting

Should I move everything over to pages?

or should I places all pages and posts relating to the same topic all on the same page

or does anyone out there know of any way of showing briefer post, that when click on expand to the full length post

 

Any comments, help or suggestions would be appreciated.