Drupal 7.x

So as you can see here:
http://www.cwanalytical.com/newsite2011/?q=Cannabinoid%20Profiling

and

http://www.cwanalytical.com/newsite2011/?q=node/4

I would like to insert a text ads inside my article how to do it?

Hi. I'm building a website for my swimming club. I'd like to integrate a results tracking system into this and have a page that allows the browsing and searching of information stored in tables in the SQL database. I'd also like to have some content blocks that are used in the sidebars and stuff like that to access the same information for things like Top 10 tables etc. Could anyone please point me in the right direction of either an existing module that does what I need, or information on how one can build such systems?

I am looking to upgrade my sites from Wordpress to Drupal. I am a journalist who builds his own sites and not a professional web developer so there is a bit of a learning curve.

Hi Drupalers, hope all is well and I am wondering if you can help. I am new to this application. I have a website that was built using a different piece of software and now realise that it was not quite the right piece of software for the job. I stumbled across and loved some of the sites built with it.

How would I create a listing like Amazon giving an item listing, and when you click on the item it makes it larger giving more info just like Amazon and then a buy button.

Secondly; can Drupal handle feeds of any sort?

Hey guys, just started out Drupal 7 and now I am confused :

Suppose I write a custom module,

#1- How can I get the content of the custom module to be displayed in a custom page?

#2 - Do I need to output the content of the custom module as a block? From there, I will called module_invoke() to display the block onto the custom page?

Hope someone can enlighten me :)