Hi Walace,
Only parts of the bondageproject.com website are free, but it contains some basic information.
Knots and techniques
Rope
Suspension
Physics
Shibari history
Especially suspension seems to be a tricky and dangerous matter requiring a lot of practise. The shibari workshop at http://rare.ropemarks.com is for pay, but perhaps you could email the people at bondageproject.com and ropemarks.com and ask if they know anyone in Brazil who teaches shibari.
Great for starting out
BDSM Backroom Bondage Lesson
Lots of knots
www.animatedknots.com
www.realknots.com
Rope Harness Instructions
Tammad's Bondage How To Page
Good luck!