OK, I'm really going to stick my neck out and post my suggested starting gear list. I base these choices on the climber wanting to get the most value ( performance vs. cost ) possible and understanding that this is a serious investment. I'm trying to suggest good quality affordable gear that will hold up and be useful after you finish the class.
Almost everybody else will have different suggestions and most of them will have good reasons behind their choices. Like I said before, it really is a lot like asking a group what kind of car you should buy.
I have arranged the items in approx order of importance.
Prices and part numbers are from this years Sherrill catalog.
Try to get hands on with as much of this stuff as possible before buying. There is a Vermeer store a little over an hours drive away in Olathe. They are a sales store for Sherrill gear. I would STRONGLY suggest a visit there prior to buying any gear. Do a GOOGLE for Vermeer Kansas to get more info.
The minimum items to leave the ground are a saddle and climbing line. I add a carabiner and a book to this group as well.
Saddle : Buckingham Cougar. Size as required. Try on before buying. $229
Climbing line: Poison Ivy Hi-Vis 120' with splice on one end. For traditional climbing you don't need the splice, but it is nice when climbing on a split tail. Take good care of your climbing line and you should be climbing the spliced end about time the other end begins to wear. This line is fat enough to grip by hand and still thin enough to work with mechanical ascenders. PN PHI-120-S $134
Without splice PN PHI-120 $109
Carabiner #1 :For attaching climb line to bridge. Petzl Am'D Tri-Action PN 28337 $19
Book: Tree Climbers Companion PN 16217 $15
Next up is Personal Protective Equipment. Never climb without it.
Helmet: Petzl or Kask with chinstrap. I have a Vertex Vent, but buy whatever feels best on your head. Just make sure it is for Arborist use. $ 95 - $ 125 Earmuffs are optional till you start running a chainsaw.
Safety Glasses: Again choose for comfort and durability. $ 5 - $ 20
Footwear: If only using my handsaw, I will sometimes climb in tennis shoes. Steel toe work boots are better. Plan on getting steel toe, steel shank lineman boots for climbing on spikes. $ 50 - $ 500
Climbing gloves: Optional, but I find them pretty handy. I use the blue rubber coated style. PN ASUMG-BL $4
These next items make it possible to get your own rope in a tree and to secure yourself in the tree.
Throwline with weight: 150 ft Neon 3 with 14 oz Neo throw weight. PN SET90 $27
(You can use a 2 gallon bucket to store it in for now or buy the cheap Fold and Hold cube PN 28289 for $16.)
Lanyard: Lightning 2-in-1 12' with prusik. PN 33403 $77
Carabiner #2 : Same as biner #1 for use with Lanyard. PN 28337 $19
Cambium Protector: Leather tube to protect tree bark and extend the life of your climbing line. PN 30535 $ 21
Add a gear bag from Wal-Mart or even an old suitcase to keep your gear in. Depending on your helmet and footwear choices, you can get to this point for $750 to $850 invested.
Now you have the equipment needed to practice the basic skills learned in class. Add a handsaw and you could do simple pruning jobs. Notice I said 'could' and not 'can'. You still need to know what to cut and where to cut it, before doing any tree trimming.
From here, your gear choices depend on your style and type of climbing. Spikes for tree removals, eye to eyes for split-tail climbing, ascenders for long climbs..... the choices are endless.
Rick