Click the bell icon in the top bar anytime to see what's new — you'll notice a little number badge if there's something you haven't seen yet. Tap through them one at a time, or use Mark all to clear everything in one go. Just know that once something's marked read, it won't be sitting there to look back on later.
Checking your notifications
Click the bell icon in the top bar anytime to see what's new — you'll notice a little number badge if there's something you haven't seen yet.