You can't "integrate" Joomla with Blue Voda ... they are completely separate 'foundations' to build a website on: Blue Voda is a
tool which allows you to create, layout, and publish a page, whereas Joomla is a
script that is self-contained (runs by itself) that allows you to plug in add-on's for different functions or modes (like special shipping mini-scripts, Polls and Voting options, etc.), change the look and feel (the backgrounds, borders, headers, page layout, etc.).
Joomla has a lot of things already included, like a forum, a blog (so you can "publish" articles in an organized archive --- good for SEO values), "Reviews" by visitors, etc. and because it is somewhat pre-configured you don't have to deal with all the complicated set-up and coding. Because it is a script, however, you will need to become a bit familiar with the tiniest bit of coding to move things around and change colors and things, but this is simple to pick up: either study the User Manual (available online or download from Joomla site) or intelligently follow the threads in the Joomla Support Forum to see how others have been helped before you. You might also get an idea of how to "project" down the road how you want to do things after discovering some of the things others have dealt with or struggled with also, thus avoiding some hangups.
Because Joomla is a script, you have the opportunity to either use the default template that comes with your installation, or you can opt to "skin" it with another template that is more to your liking: some are free, and others are not --- depends on what your end-vision is and your budget (or tolerance level, as some opt to merely plug everything in
including a Premium template and avoid all the coding and manual configuring). For an example of some Premium Templates for Joomla, check out the CMS Templates
here. All come with complete instructions as a ".txt" file within the Zipped folder, and they should be followed precisely for best results.
Your Joomla installation (because it is a script installed on your server in your account) is accessible via the online Admin panel which you should already know how to access. It is here you will be doing most of your work, and since it is accessible from any computer, you are not locked into the same situation as with Blue Voda. You merely upload files to the panel, and make changes and updates there.
I suggest you really dive into the
Joomla Community: bone up on the topics in the Support Forum, and try to form an understandable "overall" logic that will help keep you on track as you refine your Joomla installation. Although
I provide professional services to help out with installations, customizations, and upgrades to Joomla projects, there are a lot of others to choose from also, as you will discover --- but there are distinctive differences that make it somewhat difficult to discern who might be best suited.
You will be fine.....just take advantage of the opportunity to learn from all those who have gone before you (the Joomla Forums) and give yourself a break by setting aside enough time to get through the learning curve.
Change Your Perspective, Not Your Expectations!