16th-Note Clusters
These rhythms are incredibly common, you will find them everywhere in music so it makes sense to practice them individually like we do in these eight exercises.
Here they are written out, practice them first chromatically.

When you can play all four exercises comfortably at various tempos, try sweeping them as well.
Spend many days with these 16th-note clusters as a vital part of your daily routine.
When they all feel easy and you’re getting a bit bored, move on to the next step, combining rhythms.
Chromatic Guitar Lessons | Related Pages
Chromatic & Sweeping | Step-by-step guitar course

The chromatic and sweeping exercises will sort out any problems you have with synchronizing your left and right hand as you play with a pick.
Take the Chromatic & Sweeping Course and you’ll will improve your accuracy, build speed, as well as train you in reading rhythms better.
Metronome
Spytunes Tap Tempo Metronome can help you when practising songs and exercises by getting yourself organized.
Manually enter the tempo or simply tap it in. You can also add accents, helping you learn complicated rhythmical patterns.
About me | Dan Lundholm
This was a guitar lesson about 16th-note clusters, by Dan Lundholm. Discover more about him and learn guitar with Spytunes.
Most importantly, find out why you should learn guitar through playing tunes, not practising scales, and studying theory in isolation.