People, I haven't been through pro training on guitar. I just learnt it from my friend in an about 5 week span, the basics, & started learning on my own. My friend gave me chord combinations for practice; combinations like Cmajor- Fmajor- G7, Dmajor-Gmajor-A7...and so on; and in a similar way for the Minor chords too. My problem is that I have no idea about these combinations and for other chords like sus chords, maj7, min7, etc what are the combinations that I need to follow for easy shifting between chords. Please suggest!!!