All you need to install kiwitrees is a webserver with PHP and MySQL. Almost every web hosting service provides these, but be sure to confirm that those supplied meet or exceed the minimum system requirements.
Download the latest version of kiwitrees available from the downloads page
However, before you can use kiwitrees, you need one (or possibly more) GEDCOM (family tree) files. If you have been doing your research using a desktop program such as Family Tree Maker, you can use it’s “save as GEDCOM” function to create a GEDCOM file. If you are starting from scratch, then kiwitrees can create a GEDCOM file for you.
So, after installation, you’ll be directed to the GEDCOM (family tree) administration page, where you’ll need to select one of the following options:
There are lots of configuration options. You’ll probably want to review the privacy settings first. Don’t worry too much about all the other options – the defaults are good for most people. If you get stuck, there’s lots of built-in help and you can get friendly advice from the help forum.