On the right side, you can see my Twitter updates.
Here is how you can add your Twitter to your Blogger.

1. Login to your Blogger and go to Layout.
2. Click “Add a Gadget” and select HTML/JavaScript. Add the following code.

3. In the above code, change YOUR-Twitter-NAME to your twitter name. If you want to change the number of updates, change count=10 to any number you wish.

4. Add the following CSS to your Blogger CSS and tweak it according to your taste.

Related posts:

1. How to add Read More to your Blogger
2. Adding Tweet Button to your Blogger and Website
3. Adding search to Blogger or website

After reading an article by Woork, I added Tweet this to my bloggers. The article was simple but I thought I could add a little bit more details here.

Open your blogger and go to Layout.
Click Edit HTML then tick a box next to Expand Widget Templates.
Then find a line

Then after this line add the following line.

Then add CSS just before the line.

I add the following css to mine.

For your normal website, you can use the following code where you want to add Tweetmeme.

You can find an Official documentation.

Related posts:

1. Adding search to Blogger or website
2. Add sharethis widget to your Blogger, WP or website
3. Add your Twitter updates to your Blogger