Newbie need help on sqlite3

Do anyone have a good link to guide about downloading the sqlite3?

I have just newly installed ruby, and i started the server to view the
localhost.

and it was ok until I open the link application environment where
error says:

--------~----------~-----------~~~~
MissingSourceFile in Rails/infoController#properties

no such file to load – sqlite3
RAILS_ROOT: C:/Users/User/myupcoming_project
Application Trace | Framework Trace | Full Trace
This error occurred while loading the following files:
sqlite3
Request

Parameters:
None
Show session dump

flash: !map:ActionController::Flash::FlashHash {}

Response

Headers:
{“cookie”=>[],
“Cache-Control”=>“no-cache”}

--------~-----------~~

Any help will be greatly appreciated

RobJ.