While on Sharesome, your notifications will show up in the Notifications Menu. This can be accessed through the Bell icon (top of the page for Desktop, bottom for Mobile). Once you open it up, All of your Notifications will show up sorted from most recent to oldest. You can switch to seeing different types of Notifications in this menu, to help you answer these as you see fit.
From left to right, you'll have four ways of filtering these: All, Likes & Shares, Mentions & Comments and finally System. Most of these are self-explanatory, except for System. In the System filter you'll get notifications such as Tip of the day, who started Following you or who gave your post a Tip and how much. This is also where you'll see various notifications that have to do with your account, such as when a Moderator deletes your post from their Topic or when you are accepted as a Moderator in a Topic.
On Desktop, you have an additional button, the "View All" button. This simply redirects you to a page in which you can see all of your notifications, from most recent to oldest. It has nothing special, aside from loading faster or if you want to be able to freely scroll through the list, without distractions.