Tree Climbing  Before climbing a tree, it is imperative that you closely examine your tree for dead hanging branches and other potential hazards!
Single Rope Technique - SRT
While the doubled-rope technique (DdRT) is the preferred method for short ascents and canopy scouting, single rope technique (SRT) is the preferred choice for fast, energy-efficient ascents of 50 feet and higher.

The more traditional of the two approaches, SRT was introduced to tree climbing by climbers with mountaineering and caving experience.

For ascending the rope, cammed devices called ascenders are used. These devices are easily pushed up the rope and hold the climbers weight when pulled or loaded. For coming back down, or rappelling, a descender is used to manipulate friction and therefore the speed of a climbers descent.

Compared to the Doubled Rope Technique (DdRT), which is the most efficient way for moving around within a trees canopy, SRT does require more equipment and a higher degree of technical skill to engage and disengage.

To more easily change from SRT to DdRT while in the tree, its best to use a bowline with a Yosemite tie-off up to the supporting limb. Running the line over the supporting limb and tying it to the trunk is acceptable, but it increases tension on the limb and you will require help from the ground to change over.

Link http://www.spadout.com/wiki/index.php/SRT
Emergency Preparedness
Doubled Rope Technique-Ddrt
Gear Inspection
Samson Rope Bulletin
Secured Footlock
Single Rope Technique-SRT
Throwline Basics
   Tree Climbing Knots   Knowing the uses for a termination knot or a load-securing knot is essential for a safer workflow and getting the work done.
   Tree Rigging   There is a great deal to consider when it comes to 'rigging". Knowing the ropes is only half the job.
   Rope Splicing Department   SherrillTree's Splicing Department are certified splicer with ZERO Failures.
   Tree Health Care   Find 'best practices' suggestions that SherrillTree endorses for continually enhancing the skills of our trade.
   Product Instruction   Product PDFs, Videos and some helpful buying guides are just some of the instruction you can find inside.
   Rope Care   An excellent article on Rope Selection, Rope Usage and Rope Retirement by one of the industry's top rope Manufacturers.
   Tree Hazards   When deciding whether to climb a tree, start out by taking a close look at it.