I need help with public viewing of my page

[Squeaky Neb]

My site doen't work right. If i add a page and link it from the index page, only the index page shows right, and the other page shows as html. In the file manager the index page icon has a page and an earth but the other page only has the page. i was very careful about setting the filetype to html. in the html editor it shows fine. Does anyone know why or how to fix it?

[Chris73]

Can you add your website url so i can take a look?

[Squeaky Neb]

squeakyneb.x10hosting.com
Now it is really messed up. How do i get it to go straight to the index page and how do i get it to display as a web page instead of html. also, when changing file permissions what does user, group and world mean and whats the difference beetween read and execute? i have tried ticking execute for user group and world but it doesn't change anything.

[Chris73]

By the looks you have no index
name index to index.html

Set file permission to 755

tick the top 3 the 1st one in second row and tick the bottom 3