hehehe, reminds me of my first years of model-building!
I used to just glue the parts together and usually left the small parts off because I wanted to have them done quick so I could pick it up and look at the planes and play with them. If I painted them, it was always after finishing building them. I've found a green & orange bearcat, an all-silver phantom, and a brown & green lightning in the basement. Holy cow, they looked AWFUL!
Anyway, back on topic, I have a couple recommendations.
I have a few Testors 1/72 SNJ Texans. Not great kits, but they go together easily, they look neat, and they're pretty cheap
Another one of my old favorites is the Monogram 1/48 A6M Zero. I haven't seen any of those around, but I recall that they went together easily, were pretty cheap, and had retractable landing gear, which I especially enjoyed back then.
Lastly, when I was little, my parents got me a "subscription" to something I think was called Young Model Builders Club. They would send two kits a month by mail. I don't know if the company is still around, but if it is, you might want to consider it.
I'll stop blabbing now, I Hope I helped!