To add new plugins to your WordPress backend (without having to install it manually), on the left-hand panel under Plugins tab, click Add New and type in the name of the plugin or the function that you want, and click Search Plugins. Find plugin you want and select Install Now, and then click Activate Plugin to begin using it.
To pick a free theme, log into your website's WordPress account (the URL you bookmarked after WordPress was installed) which I'll refer to as the "WordPress backend" from now.
Bluehost had exactly what I needed. This is how basic I am; I started by looking for what WordPress recommended, a fantastico logo that is a blue smiley face. They also wanted to make sure more info they had what is called cPanel.
The really cool thing about Bluehost is that with the click of one button your blog will set itself up. Yup, it's really that easy. All you do is log on, go to the cPanel and click on the little "Install WordPress" icon. The instructions after that are easy to follow. This part takes no more than about 1 minute to complete. Once you finish this step your blog is almost ready to go. Well, technically it is ready to go now but once you see step #3 you'll see what I mean.
On the left panel, under the Appearance tab, click on Themes, click on Install Themes tab across the top, tick the boxes you want or put in name of a design or word and click Find Themes. Once you have found and settled on a theme, click Install, and then click Install Now button, then click Activate and your theme or design should be live on your website now.
It's that easy and once you've done it once, you can do it again without a problem. Remember now that you have your space, you can continue to add domains to your web host by adding subdomains. There is no limit to the amount of domains you can add. So go ahead and build your blog empire. I am and I'm going to do it on my Bluehost account.