from what i've seen in your pictures so far, this is going to be one hell of a job with the amount of rust you've got. the half shaft end that splines into the hub may be rusted in which case you're going to need some sort of extractor/puller to press the half shaft out of the hub. the half shaft should be pressed out of the hub towards the diff.

if you have the right tools, you can change the bearing without removing the entire hub carrier assembly from the car. if you don't, you'll still need special adapters etc. plus a hydraulic press to press the old bearing out and the new bearing in.

i'd recommend getting some sort of manual before going any further and ensure that you'll have the necessary tools to complete the job.

doing this job on jackstands without the proper tools plus the additional rust factor will be challenging indeed...