Category wise page is not updated with posts automatically

Oh..I have started blogging for fun..looks like so many technicalities involved. Adding - 'Read More' Manually sounds tedious, so will go for plugin. Pls let me know how to instal plugin too, I have downloaded a few plugins but don't know how to instal them. :(

Wordpress Editor comes with "Read More" by deault, you just need to place your cursor where you need to insert the read more link, and bam you are done! Publish the post, go to your home page and you are can see it there.

The highlighted one...

Or simply, you can just put this code in your HTML view - <!--more-->

Blogging is fun, but if you are looking for a good blog with many more readers, thats where promotion and all the technicalities get involved. 

Else, you can just do whatever you like and dont bother viewership :)

Do you want something which will list the posts filed under a particular category? If yes, install this plugin and in your page include the following line:

[catlist name="category-name"]

I don't know if it's available for wordpress.com blogs. 

Great Ranjith. Thanks

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Man! You are on a roll. I found you all over the place on Blog Adda Forums and now here too.

You have any problem with me being on Blogadda?

Just an observation. Saw some 2-3 threads here and your name looked familiar. Then remembered seeing your name on 9-10 threads on Blogadda.

Hi Thanks for your reply. My posts are appearing in correct categories, but I have created different pages for each category, and my posts don't appear in those pages. But I can visit them through Category cloud. Does this mean - I need to remove the pages that I have created separately.