I tend not to comment on learning threads since I am 100% self taught and stumbled my way through. But in this case - I have previously commented on a way to do this - practice riffs.
La Bamba - D G A G
What I Like About You - E A D A
Good Love - C F G F
Already Gone (Eagles) - G D A (repeat)
You get the idea. The point is: yeah, you want to get into a groove rhythm wise and NOT STOP - so when you fumble a chord you stay locked into the groove and just go to the next one. Playing these chord riffs is a great way to do this - I would sit in front of a TV with an unplugged electric and strum these rhythms for hours…
As for Barre Chords - well, you can do the same riffs with barre chords - E using an A-shaped barre chord up at the 7th fret, down to A, with an e-shaped barre chord at the 5th fret and D with an A shaped barre at the 5th fret, etc. Same thing - play them for hours.
Two key points with barre chords:
- focus on the lowest 2 - 3 strings of the barre. Look, fretting the entire barre is hard - and for most rock songs you simply don’t need to. Play the “power chord portion” of the barre - the lowest note (the “Do” or Tonic note of the chord) and the next couple of strings. So if the bottom part of your index doesn’t fully barre the higher strings - well, fine - keep working at it but you still sound rockin’ with the power chords. Listen to Judas Priest’s Livin’ After Midnight for a boneheadedly simple E D A D riff played on barre/power chords. Or AC/DC’s Sin City (E B D A - then a little Open/3rd fret/Open riff on the low E string) - just play the power chord portion and you can sound good really quickly.
- muff the strings - when you play barre chords with the goal to play rock, you often need to palm mute - i.e., rest the edge of your picking hand’s palm (the pinky side of the palm - duh!) on the strings right where they cross over the bridge saddles. I.e., use your palm to dampen and muffle the strings. Through a distorted guitar this tightens down the tone - you should hear cool classic rock chugging tones immediately when you try this. When you play a barre chord riff, always try muffing the strings to see if that particular riff sounds more correct playing muted or wide open - since most riffs are actually rhythm guitar parts that other instruments play over and around, it is typically muted - wide open chords create a LOT more sound so there is less room in the mix. I spend well over 50% of my playing time palm-muting if that is any guide to newbies…