Gill Sans font family rendering with @font-face

Gill Sans font family rendering with @font-face

I am new in rendering fonts with @font-face. I am using Gill Sans font
family in my design. I did research to understand make it work for me but
I am not able to understand how to use it. The font type I am using dont
have .eot and woff font type. I can just see gill sans font true type font
in my font folder.
I want if anyone can help to to understand how it work and make it easy
for me to use this. I am not understand what is happening in the below
code.
@font-face {
font-family: 'MyWebFont';
src: url('webfont.eot'); /* IE9 Compat Modes */
src: url('webfont.eot?#iefix') format('embedded-opentype'), /* IE6-IE8 */
url('webfont.woff') format('woff'), /* Modern Browsers */
url('webfont.ttf') format('truetype'), /* Safari, Android, iOS */
url('webfont.svg#svgFontName') format('svg'); /* Legacy iOS */
}
Thanks,