forum.alglib.net

Hi there.
my question may seem very trivial but as a beginner i am trying to get to know how to use Alglib files , So for instance to use with vb just importing a module into the project is enough or I need to install something?
A simple module (say fft.bas) is enough or i need to add some others?
if i want to add whole the package to the functions library, what should I do?
tried to understand how it works from your web and manual but no thing to help a beginner like me. maybe it is too obvious to be guided ...
appreciate your kind help very much.