Is the guitar popular

yes it is, but you've pictured a Bass Guitar. Both are very popular, although the standard six string (or more) is normally the front man in a band or what the guy sitting on the beach is playing.

Your question is simple, but the answer can be very complex. If you're thinking of just starting to play, limit your spending to $200.00 to $250.00 on a standard six string guitar. Good enough to make your decision about continuing to learn without going broke.