Charlie had his second vaccinations last week do I'm planning to take him for his first walk next weekend.

It's been such a long time since having a puppy, do you have any tips? I'm also very nervous about letting him off the lead as we have a big field only 2 minutes walk away that Harry used to do circuits round! I'll take him a good few walks before I let him off the lead but I'm scared he'll run off and won't come back!