Many people want to show only part of post on the homepage, for this one can deploy many techniques, few are explained here.
1. Use of more tag
There is a tag in wordpress called more tag as shown below.
<!--more-->
You can place this tag, anywhere in your post, post after this code won’t be shown on the homepage.
Pros and Cons: This method is useful when you are too attentive and can remember to put this tag when and wherever you want. If you miss this tag then full post will be displayed. You will have to put this tag manually.
2. Template Coding
Using ftp go to the folder wp-content\themes\”your them folder”
and locate “index.php” file in this theme foler of yours and serch for line something like this
replace this line with following code
Pros and Cons: This method is useful when you want to make things automatic. this code will help to show only first 55 characters (default value in WordPress) of your post. But using plugins, you can customise this in the way you wish. I use this method.