My 2020 Lag B'Omer post is here with links. For the biblical and rabbinic background of the holiday, see here.
Last year's celebrations were strictly limited in Israel due to the pandemic. There are still substantial restrictions this year. You can read about them in this article by David Israel: Israel Bans Lag B’Omer Bonfires Outside Strictly Designated Areas (Jewish Press).
Wherever you are, if you are celebrating, please celebrate safely! Rabbi Robin Frisch has some suggestions, many of which work anywhere: The holiday Lag b’Omer is all the rage in Israel — here’s how to celebrate it (JTA).
UPDATE (30 April): More here. And, alas, this was not to be a safe Lag B'Omer for many.
Visit PaleoJudaica daily for the latest news on ancient Judaism and the biblical world.