nostter is a good and easy to use client, even gets notifications mostly right 😀 
doesn't have the immense number of features that nostrudel has, but it's a great client to start with
nostr:nevent1qvzqqqqqqypzp0d7r0dunvj63kya3ld0p0s6phxcx7avj6glt9uf9yp6tlwcdcnlqqsx8m0j5hgtkg6quah5l0hx62lclrpew2fqc8h0ttjv7kva563fk6qfag8sx