welcome to CS, IvanG
Get your beans from Andy, here on Beanbay, click on the link to roasted beans at the top of the page.
Get what you might need in a three week period and stick to one bean to start with, something like the Peru, Colombian or Elephant Hills,
once you're up to speed with your gear, you could broaden your choice.
As for technique, there is plenty here and on the web in general, go looking with the the CS search function or go Google, using your machine model number as search parameter and a phrase like "how to make espresso".
Find the thread here on CS for your gear and search for Scottie Callaghan, he has some instructional video attached to a site sponsor's website.
(might be Espresso Company Australia?).
Use your initiative, ask questions, enjoy the journey!
here's the link to ECA: