1. Click File

2. Hover over New and choose Page

3. Choose Page
4. A Dialog box will open.
5. In the middle column of this dialog box, choose HTML
6. Click OK
7. Click the Save icon and name the first web page index.html
The first page of a web site must be named a particular way. In most cases, index.html is appropriate. However, check with your web hosting provider as they will have a list of acceptable names for the Home Page.
But, if you do not yet have web hosting, then your safest bet is to stick with index.html as I have found this to be universally acceptable.
*default.html, on the other hand, is not always supported by web hosts. In other words, naming the home page default.html is sometimes ignored by various web hosting providers.
As a rule of thumb, do not use any spaces in your web page names. You can use a hyphen or an underscore, but never leave a space.
Video-Tutorials.html is correct.
VideoTutorials.html is correct.
Video Tutorials.html is not correct.
The browser will ad a 20% where the space occurs.