There are many varieties of skill in The Fellowship of the Ring. The most obvious skills come from the different characters' races: Legolas is an Elf, so he can run on top of snow. Gimli is a Dwarf, so he can find his way around underground. And the Hobbits are expert smokers, because all Hobbits love their pipe-weed. But some characters have skills in spite of what they are: for example, Frodo is a good talker, especially for a Hobbit. Sometimes, Tolkien uses these contrasts between a character's abilities and his race to make jokes, like when Sam blushes in self-consciousness as he recites the beginning of the Elven song The Fall of Gil-galad. Frankly, if we were Hobbits (in our dreams!), we would start to feel insulted that the norm everyone assumes for Hobbits is complete, bumbling stupidity. Every time a Hobbit shows any kind of skill with language or storytelling, everyone else stares at him like he's a talking fox. But Tolkien seems to be making a point here: anyone can excel and become better, regardless of their natural strengths and talents. After all, Frodo is our hero. No offense, Frodo.
Gandalf's skills make him a better leader than Aragorn.
Strength is more important than wisdom when it comes to fighting evil.