Calisthenics and Bodyweight Fitness

Like a lot of people, I feel that the main limiting factor at the moment for me to get stronger for calisthenics is my grip and palm endurance.

I'm following these general guidelines:

• Grip strength will help with pain and ability to hang for longer, so I'm focusing on gaining there.
• Palm over the bar grip while training helps to gain forearm and grip strength, as well as for having good active hang form.
• No chalk. I should be able to hang comfortably from a wet bar.

I was wondering how y'all are dealing with these; what's your personal tips?

• Chalk / no chalk ?
• Pumice stone for calluses ?
• Hand cream ?
• Some specific grip strength exercise ?

Cheers!