Need some halp!

I’ve bought GMod 10 quite a while ago, and just played a little bit here and then. The problem now though, is that most servers I join I can’t really play because I’m missing a ton of models.

I’m talking about seeing dudes flying their ERROR planes and driving their awesome ERROR cars, oh, there are also sweet looking ERROR forts too.

I know that I can download this stuff, I don’t know where, however, and nor do I want to go on random sites without really knowing what I need.

Could anyone please tell me what the hell am I supposed to do? (On a side note, how do I set up an owner for an object?)

Thanks.

Most servers have PHX, WIRE, and some custom car mods. Download phx and wire if you hate seeing errors.