It really is not complicated, however you haven't yet checked out the link (links are in green) that I already sent you in my first post (above) about virtual pins.
You can also find other great examples, including LCD, in Blynk's example browser >here<. That will be your best way of understanding how all the widgets and virtual pins work.
Load and try a few of the examples, then try modifying them for your needs. And then if you need any help with a specific issue, you can post your code. >please follow these guidelines < And then we (fellow Blynk users) will try and help.