In your WP Admin visit the plugins page again. If there are new versions of any of your installed but now inactive plugins, there'll be a note telling you so. If you have any plugins that are not part of the WordPress Plugin Directory, this is a good time to check the websites for those plugins to see if there's an upgrade available.
You can also take a look at the Plugin Compatibility lists on this page:
Once you're sure that the plugins you want to use are up-to-date, activate them one at a time so that there are no problems.
This is also a good time to check for updates for the theme you are using. In the wp-content folder on your computer (which you did not upload, remember?) there is an updated version of the default theme, which I always like to have around even if I'm not using it. You can simply replace the entire wp-content/themes/default folder with the new one.
You can check for a new version of the theme you are using on the developer's website, or in the WordPress Theme Directory.
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Many people are passionate about their hobbies. They make time in their lives for them, spend lot of money on them, and even sometimes move their homes, families and jobs just to be closer to their hobbies. But even if you just enjoy your hobby and perhaps wouldn't class yourself as a fanatic, wouldn't it be great if you could earn money online possibly even a full-time income, from simply telling others people about your passion?