It's actually a lot easier than you think!
The Word: Plumbing Vents & Traps | The ASHI Reporter | Inspection News & Views from the American Society of Home Inspectors
We already had to do this with our basement. So far, no water problems!
NDS EZ Drain Pre-constructed French Drain Installation
how an interior french drain works - Click to download pdf
You may need an interior drain and sump pump to solve the problem
Perimeter Drainage System
Lawn care just got easier! UnderGround Downspouts are easy to install. Mow right over it! Never needs maintenance. Works with any style downspout. http://waterproof.com/downspouts.html
VendeShop: Curso de plomería, fontanería, termofusión (incluye vídeos)
installing an air admittance valve under a sink