It's a very common requirment that you may want to
insert ad codes or some other texts in a joomla article
or elsewhere.I am going to show how it can be done so
that if you want some text like "{replace it}" will be
replaced by your code -

It's a very common to get joomla module's setting parameters in
code to process the module.It's easy but sometimes things
become complicated if you don't find the right way to do
that.

Facebook access token is needed whenever you access
facebook stream of page or profile, Graph api call to post
to facebook.there are many ways by which you can generate
access token.By the following way you can create short lived
access token for a user as well as extend it to long lived
token -

You can show wall posts of any public facebook page/group/profile
using Graph api in your website if you know javascript & jquery.