How to use loops to mix two or more tracks.
This is an incredibly important trick to use, especially for older house/club/dance/pop music, circa 80's 90's and early 00's.
This music just isn't built like modern DJ music, not even close. There is almost no intro or outro, and contains a lot of melodies and vocals, creating huge clashes in you mix, and it sounds horrible. So yeah, use 1 bar, 2 bar, 4 bar, or full phrase loops to make getting in and out easier.
Using loops to mix
A little more advanced, using loops and rolls to create build-ups and climax

Autism is a neuro-developmental condition characterised by difficulties in social interaction and communication, as well as restricted and repetitive behaviours or interests.
There is an Easter egg in Serato called Trancifier. DJ Holland (from Crossfader) talks you through using it, some caveats in there though, it doesn't have any quantize applied, so use with caution.

Autism is a neuro-developmental condition characterised by difficulties in social interaction and communication, as well as restricted and repetitive behaviours or interests.
Auto loops and memory loops CRDS. How to set memory loops without needing performance pads (cue points) and set an auto loop, so a track will automatically loop when it gets to that point while it's playing.

Autism is a neuro-developmental condition characterised by difficulties in social interaction and communication, as well as restricted and repetitive behaviours or interests.