If you prefer learning by practicing, Lichess has a great introduction to most tactical patterns: https://lichess.org/practice
Once you start mastering them, you can try real problems on Lichess as well (https://lichess.org/training), or try solving as many as you can in five minutes (https://chesscup.org/), it's a lot of fun!
Once you start mastering them, you can try real problems on Lichess as well (https://lichess.org/training), or try solving as many as you can in five minutes (https://chesscup.org/), it's a lot of fun!