Tips for a beginner

[Rycky]

Hi, I'm Ricky.

In a few days I will start building my forum with Xenforo and I have some beginner's questions:

1. I am going to change things with CSS and make changes to some more files. How should I do it so that when there is an update they are not deleted?

2. Is Xenforo updated often? Is it like WordPress?

If you think that as a newbie I should know something more, please tell me, Thanks!
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