Welcome to the Linux community! Like the other commenter said, we all started as n00bs so don’t worry to much. If you are getting a hang of the phone, which is relatively new territory for Linux, then you should get along well with the full desktop distribution (aka distro).
One piece of advice would be to make sure you understand what command you are running if it involves “sudo” as it’s a very powerful tool. Some distros are more n00b friendly and will warn you that it might break your system; others, like Debian that PureOS is based on, will let you break your system. But if you backup your data often then it’s all part of the fun!