Testversion Internet Security - Premiere

[REDACTED]

Hi, I have to admit I'm kind of a rookie, so please forgive me if this is a stupid question.
I downloaded the 60 day test version of Internet security and I'm wondering if it will stop automatically and go back to the free version after that time or if I'll have to cancel it manually somewhere on the Avast website or within the application itself.  If so, I would be grateful if someone could show me how to do this  and what else I may have to pay attention to to not have a bill coming in after the test period has run out.  Same goes for the Premiere test version which is also available here. I'd also be interested in that one.
Thanks in advance and apologies if my English isn't the best. For some reason the website changed to the English version after I logged in.

[DavidR]

1.  If you go through the process of uninstalling it, it should offer to install the Avast Free version.

2.  More importantly when you signed up for the 60 day trial you set up a payment instruction, that would be actioned after 60 days.  You would need to cancel that or it will automatically actioned. 
Orders & Renewals - FAQ - https://www.avast.com/faq.php?article=AVKB24#artTitle