Fantastic advice from ommmward!
Jasminena, I'd put it to you that you really do know what you are doing in educating your son; you just don't know that you know! You don't have to change your approach just because he is turning five. All his life you have been telling him about the world, showing him the world, influencing his behaviour, and watching him learn. Did you worry - REALLY worry - that you were getting it all wrong when he was two? If you didn't worry then, why start now?
Educating your child is tremendously important. But there's no urgency about any aspect of it. Only at school does it matter exactly how old a child is when he starts writing or doing algebra, because the class moves on and the child remains baffled if he hasn't learned what he was "supposed" to have learned. Home ed is different: you aren't going to force your child to leave behind a topic he hasn't yet grasped in order to move on to a more advanced one!! You have years and years and years in which to do this job.
I live in a tourist town. Some foreign visitors come with organised groups. They have to keep a constant eye on their leader's hoisted sign and keep up so as not to be left behind. There's no hanging about. Certain sights will be seen in a certain order. When their coach leaves town for London at 1pm, they had better be on it.
Other visitors travel independently with their own maps and guidebooks. They see what they want to see and spend as long as they like on each attraction. Perhaps they'll get lost for a while. It's slightly scary, but it's all part of the adventure, and may lead them to learn different things about the town. Maybe they'll have a pub lunch and chat with the locals. If they love the place, they might decide to stay here longer and catch a later train to London than originally planned. Or maybe they will miss out London altogether on this occasion.
When I first moved to this town, with the intention of staying for a year, I saw many of the sights, but obviously I explored them in a more leisurely way than the daytrippers. I returned to some favourite places over and over. Some of the most famous places I've still not seen, though I've lived here for 25 years! But that's okay. The landmarks aren't going away. My education isn't ended. There's plenty to look forward to!