IMO it's best to avoid threadlocker when possible, for a few reasons: you'll learn more about appropriate torque for a start, you won't have to keep buying the damn stuff, IME you never need it unless something's wrong*, and it's nasty stuff; how's the stench on it!

*Even on applications where it's de rigeur like RC cars, I've found that most fasteners just don't require it (which you can only ascertain by eschewing it); the secret is simply to go for that sweet spot where it's plenty tight enough, but not enough to cause significant damage or wear. Those who recall the recent thread about torque wrenches prolly know what I'm talking about. Although getting back to threadlocker, obviously there are some applications where it's the perfect thing.