My advice, is download it and install it in a folder called /xoops or something else to your likeing and give it a test run. (We'll even help you move it to your site root when you feel ready to go live!) While your testing your site, you can still keep your hand coded site in the web root without people seeing what your doing in the background while you set up your XOOPS Powered site. You will find it the most user friendly and secure CMS to date. Take your time navigating through the admin controls. It may seem daunting at first, but in no time you will have a hang of the system enough to install and load up new modules from here on the site and abroad.
In time, you will also find the member base here at XOOPS to be one of the most dynamic group of people on the web. Everyone without exception is a great help to one another with support and feedback. Always feel free to come here and post your questions. Don't forget the search feature on the site here at XOOPS. You will find most if not all of your answers have been asked already. By all mean don't let that discourage you from posting your own questions!
You will find the codeing in XOOPS to be clean and very easy to modify. Overall, you can get themes from just about anywhere. For a site like yours, I would look for something warm and inviting. White may be too sterilised looking and black would be too depressing. Look for a neutral colored theme. My first recommendation is
http://www.incama.nl. Dave does a very wonderfull job and also provides some 3rd party themes that are also very good. Also check out DCDezines in my signature, there are is one there that I really like a lot.
Since you are accustomed to coding in html, you will find the theme.html files to be very easy to edit to suit to your own need for logo's and such. All themes come with a .css file for fonts, colors and the like. Over time, you will learn how powerfull the theme system is. Once you get more comfortable, you will also learn how easy it is to modify the templates. Templates are like themes, they tell the system how to display a certain block through the use of tables and smarty. Don't worry if this confuses you right now, in time you will understand, I promise! Just be sure to check out JackJ's excellent tutorial on how to use XOOPS. Following that, you can also go
http://docs.xoops.org for tons of help and informaion on the system as you grow more accustomed to the interface and the system features. I am confident that once you understand the system, you will never want to hand code html again, nor use another Content Management System.
Making the move from hand coding html to a powerful system like XOOPS is very easy. In time you will be glad you made the move as you gain more confidence in the system. Don't get rid of those old html files just yet though. Yes, there are even ways to wrap your own content into the system to make it appear seamless!
Remember, the entire community here at XOOPS, over 20,000 strong, are very helpful and supportive. No other community in my experience shares the sense of family like we all do here at XOOPS.
Let me be the first to welcome you to our corner of the internet globe!
Welcome aboard, and Happy XOOPSing!