With “with,” you immediately have the key word for the instrumental case. With a discount, with Katya, with respect, by hand: all instrumental case or творительный падеж. You can do much more with this case; it’s truly a beautiful and useful tool.
What kind of times do we live in? It’s a question one might ask these days. To get an answer in Russian (or to distract yourself from the times), let’s start by learning the names of the months and days. Here they are gathered together, with a bonus of some etymology and grammar thrown in.