Here is what I need to do:
Let's say I want to make a program that perform a search by First Name in a site like this(only for demonstration, I'm not spamming...):

search in google for <draftexpress search> and you'll get an example

Let's say I want to search for "james".

How do I do it? I spent many hours on this and couldn't find out...
The main problem iis that the website is not mine, so how can I access its components?(Let's say I want to "click" the search button there programatically)?
Is there a way to do it?
I would appreciate if you expain in details, I'm preety much new in that area...