If spring was the practice round for the #stayhome era, with fresh stay-at-home requests inbound, winter is a chance to perfect the stuck-indoors lifestyle. Make use of January (and February?) to get a head start on that perennial of New Year's resolutions: studying Japanese.
There are five main areas you can start focusing on if you're giving up Friday nights at the pub: grammar, vocabulary, reading, speaking and writing.
Grammar: Most language learners have heard about the Japanese-Language Proficiency Test at some point in their studies. It continues to be a significant test if you're looking for a certification that can help get you a job, almost all companies in Japan require it as proof of linguistic ability when hiring.