There are great YouTube channels to learn cocktail mixing from. My favorite is the Educated Barfly. His early episodes are less refined, but have more basic information that I found very useful. e.g. add your ingredients in cheapest->most expensive order, add the ice last, shake for 8-10 seconds, not the 30 you often see cited, express those lemon or orange twists because they're not just for show, refrigerate your vermouth, etc.
If you're in a big city like San Francisco, you can have cocktails delivered. Pricey, but it means those bars might survive this ordeal.
Anyway, regarding the IWM webstore... the notice about shipping delays is pretty easy to miss on a desktop browser screen. I didn't think to look all the way up at the top for a while. And it's got a couple of typos. Are we talking about no shipping at all until Ohio's Shelter-in-Place order is lifted? That could take a while...