JeffS65 has great suggestions. To add to those; you are asking almost 2 separate questions here 1) groove 2) riffs/progressions/keys. As jeff said, you'll need to get your theory going a bit in order to achieve #2. Following through the Core Learning System will set you up for all of that! (What scales to learn and how to apply them to jamming, riffs for different styles, so-on). [br][br]Groove does not require music theory. Groove is about rhythm and feel. You can groove on one chord, or one note even. To deepen your groove, learn to strum songs and don't worry about the riffs. Focus on locking in with the metronome/drummer and making it feel good/have fun! If you search 'Made Easy' on Guitar Tricks, you'll be shown a bunch of songs simplified so you can just go to town and have fun. These tutorials might be a great way to work on your groove.