What are some exercises that are good for correcting bad posture?
depends what the posture is. most popular ones are pronation distortion syndrome, upper crossed syndrome, and lower crossed syndrome
Depends on your postural dysfunction..you might also want to google and see if you can find a "back school program" it will help you learn good mechanics during daily activities.
PT, DPT, OCS Clinical Residency
As has been stated, is the poor posture stemming from your shoulders/upper back/neck, your pelvis/lumbar spine, somewhere else?
If just general and not due to injury or disability some exercises I have used are front squats, deadlifts and ESP snatch grip deads, rear felt work like face pulls and bent over db flyes. Pull-ups are also great because of upper back and shoulder stability required. A strong core is important so dont forget abs and back extensor work. I pay attention when sitting, ESP when driving. Just sitting upright and contacting shoulder blades and thoracic extension will help. Also work chest flexibility with stretches. It's a bit of a shot in the dark without specifics from OP.
You need to post a pic to get some analysis.
M.Ed. Ex Phys