Got a new 4 month old pup when do I do what lol

Sorry if wrong tag not sure what to tag as

When do I start training stuff like basic commands (sit down etc) and leash training, etc I dont want to overwhelm them.

I got them monday its thursday while I write this, they have shown more personality now and more calm so I have started with sit, down and name recognition when do I start going out to learn leash skills, socialization etc, I want to do this right 🙂

thanks!