I didn't really look at it for hints, I only bought it so I could read the game when I wasn't able to play (I was obsessed).  But Tree Tops I had to glance at the guide.  And even with the guide, it was hard to do the secret supercharge paths, especially since the guide for all its charm didn't have level maps.

I can't remember the name, but when I think of Spyro 1, I always remember the level with the rams in artisians world ^.^ I used to play demo of Spyro the dragon and there were only two levels opened and this was one of them :3 I always did crazy stuff as a kid there, trying to get up to the wall using the tiny waterfalls which make you roll (there was one where you could somehow jump while rolling or something like that) or trying to fly over the forcefield (I've never made it ) and of course chasing the thief! And I hated those herdsmen!
Also, there used to be my favourite music - credits in the demo in the level.

I think you mean Stone Hill. It's a pretty memorable level for me, too, although I think the most memorable level for me would be Gnasty's Loot. I play that level over and over, although it's not as fun without being able to collect all the gems. The overabundance of gems is probably one of the most fun parts of the level. It's music is pretty great as well, and the ability to fly infinitely like it's a flying level is awesome.