Most guitar tabs will give you the named-note chords for a song. Serious, ‘theory focused’ books will usually describe chord progressions in terms of scale degree, and use Roman numerals in place of regular numbers.
For example, a chord progression of C-G-Am-F-C will be written as I-V-VI-!, which translates to 1-5-6-1 (the scale degrees of the root notes of each chord).

Artist: Metallica:
Song: Nothing Really Matters
Key: G Major
Chord Progression Verse: Em-D-C on first three lines of each verse, then G-B-Em on the last line (‘And nothing else matters…’)
Chord Progression Chorus: C-A-D-C/A-D-C/A-D-Em

Artist: U2
Song: Sunday Bloody Sunday
Key: D Major
Chord Progression Verse: Bm-D-G *note, this progression is picked rather than strummed, using just the top three notes of each chord, except on G, which is modified as follows: B-D-F#, A-D-F# – G-B-E.
Chord Progression Chorus: Bm-D-G with percussive strumming.

Artist: Nirvana
Song: Smells Like Teen Spirit
Key: E major
Chord Progression Verse: The bass moves the progression using the same notes as the intro/main riff/chorus, while the guitar plays the notes B and E.

Chord Progression Chorus: This is the main riff: E-G-A-C. Instead of strumming full chords,use two-note ‘power chords’ (intervals of fifths) in the open position: (E/A) -(G/D) – (A/E) – (C/G).

Artist: Bob Dylan
Song: Tangled Up In Blue
Key: A Major
Chord Progression Verse: Intro to verse begins with 2 measures of A-Asus4-Asus4. Main verse is simply A – G for 3 measures, then D on the 4thth: A-G/A-G/A-G/D.
Chord Progression Chorus: E-F#m-A-D-E-F#m-A-D-E-G-D-A

Artist: The Killers
Song: Smile Like You Mean It
Key: G Major
Chord Progression Verse: G-Am7-Em/G-Am7-Em/G-Am-Em/G-Am7-Em
Chord Progression Chorus: B-C-G-D

Where To Go From Here

Now that you’ve learned some of the elementary skills and necessary for playing guitar, you can easily dive into a more formal guitar training course with a good degree of confidence. You can teach yourself via online guitar lessons, or hire a teacher, or both. Let’s look at the benefits, as well as potential drawbacks, for each case.