Getting information from a static page is very easy. You can use loadStrings() directly on a page. However getting information from a non-static page (as you want to do) is not easy. Big websites/webservices usually work with specific API's for such purposes. And those usually require authentication (for example OAuth) and dealing with response formats (for example JSON). You say you are a beginner, then I recommend starting with something simpler.

it doesn't look like you need authentication or an api key to get json from a simple google search  if you stick to less than 100 queries per day 

from google's own example, put this in your browser:

https://ajax.googleapis.com/ajax/services/search/web?v=1.0&q=Paris%20Hilton

then try this in processing:

1. JSONObject json;
2. 
   
3. void setup() {
4.   json = loadJSONObject("https://ajax.googleapis.com/ajax/services/search/web?v=1.0&q=Paris%20Hilton");
5.   println(json.getJSONObject("responseData"));
6. }

some things you'll need to understand:

1. JSON in general, how data is stored in it and what types

2. Processing's JSON object and it's methods

3. The fact that the google serach api has the following format:

https://ajax.googleapis.com/ajax/services/search/web?v=1.0&q=yourQuery")

Ah, nice find benj.n.sugar. Note that the response of this open service seems to be limited to 4 results per query (besides 100 queries per day). But to test out some things it's a good start.

Thank you guys for the quick and good reply...and the code. !  

thanks for that clarification amnon.owed; it's a pretty important thing to know!