For us we have relied on our family members and friends knowledge of home renovations to help us complete our own home renovations. And by showing DH how to do things right the first time, he knows how to do it correctly the next time. So far our friends/family have helped us with: plumbing, concrete work, putting up a new chain link fence, minor electric work, installing new cabinets, framing, laying floors, and I'm sure much more. DH has learned a lot in the year we have owned our house.
I am lucky to have a lot of DIY knowledge in our family, we are all tight wads and can't fathom paying someone to come in and do something we can learn to do ourselves. LOL. If we didn't have such good DIY family/friends, I think we would turn to google or still ask around.
Hope my ramblings helped some! :-)