XAMPP
XAMPP is a package for Microsoft Windows that allows you to run web-server software on your local computer. It contains everything you need to run webtrees. It works well for local testing and development - or if you only need an offline/standalone version of webtrees.
The “document root” (the folder where you install webtrees) is usually
C:/xampp/htdocs.  The URL for this folder will be http://localhost.
NOTE: If you use Microsoft Edge or IE, then you should use
http://127.0.0.1 instead of http://localhost.
These browsers do not set cookies properly when the domain name does not
contain a ..  Other browsers are OK.
You should copy webtrees to this folder.  Many people install to a
sub-folder, such as C:/xampp/htdocs/webtrees.
This will have the URL http://localhost/webtrees.
This allows you to have several instances of webtrees (or other
applications) installed at the same time.
During setup, you will be asked for your MySQL details.
- Server name - 
127.0.0.1 - Port number - 
3306 - Database user account - 
root - Database password - By default, XAMPP does not set a password, so leave this empty.
 - Database name - Choose a unique name for your database.
webtrees will create it if it does not exist.
webtreeswould be a good choice for your first database. - Table prefix - This is needed when you install multiple applications in one database.
Since XAMPP allows you to create multiple databases, you should use the default 
wt_.