The new chord is A7. It has four notes: La-Do#-Mi-Sol. In this song you will find a few repeats, make sure you play them. Also notice how you have a lot of chords, and you should know all of them.
New chord E. E manjor has three notes: Mi-Sol#-Si. This song is not difficult, just make sure you play the correct chords. Also, start making more changes in rhythms.
New chord in this song is E7. Four notes: Mi-Sol#-Si-Re. Remember that every seventh chord has four notes.
A basic country song. Keep the tempo the same as the music, and you can give a little bass in the left for the piano, or the fifth or sixth string in the guitar.
We have a new chord here, Cmaj7. This is C Major 7. This type of chords have also four notes, this one is: Do-Mi-Sol-Si.
In this song we don't have any new chords, because you know so many that you can just play this song like nothing
Bm and F#m are the new chords here. In the guitar these are BAR chords, not to easy to play, you may need a lot of time to play them. This is the next level if you really want to play guitar better.
A simple balad, using Bm, This progression is very popular D, Bm, G, and A.
Another song to practice chords, at this level you should be fairly good in playing chords in time, keep going you are doing great.
A new chord is Bb, the notes are: Sib-Re-Fa. Also a bar chord in the guitar, but if you played the song "If" then this should not be a problem.