Any tips&tricks for my new Asus ROG Alley?

I bought one of these and i find it hard to navigate and understand. Got any experience and tips or tricks to get it useful’ler?

Regarding updates, Mods! or outside programs?

I just had to buy a new TB HDD card , which is hard to install because i dont have those small phillipses. But anyways i did play a nice diablo 4 on it for a small while, until my hd was pretty close to full