No, so long as it's fitted comfortably.
The surcingle
A surcingle is a strap that is used to secure a saddle or other equipment onto a horse's back. It helps to keep the saddle in place, particularly during training sessions or when the horse is being exercised.
It can be used, though some people make do without it. I use it personally only maybe 4-5 times when I'm teaching a horse to drive because using a saddle it can get in the way and the lines are too low. Not necessary but useful
This will depend on what you want to do with the horse and how mature it is. I like to start backing at 2-3years old to get the horse used to weight and moving with a rider, but don't progress to jumping until the horse is 3-4 years old. You can also use a surcingle and put weights on it to build up the horses strength before backing if it's a concern for you.
Well non-mounted training is called ground work. I'd use a lunging kit ( Surcingle, cavesson, lunge line, and lunge whip) To work it in a frame, then free lunge in a round pen for bonding exercises. Also long lining the horse would be good. Bomb proofing is fun from the ground and trail courses too. Also don't forget that you can pony the non-ridden horse from the back of another more experianced horse.
Horus the horse was hoarse because of a bad cold.
From April Reeves, Horseman's U.com: Either. You can ground drive a horse first, which would entail using a bridle and surcingle. Or you can use roundpen, Natural Horsemanship or 'western' methods, where you get the horse comfortable with the saddle first and desensitize him, before the bridle. I have used both methods, depending on the future use of the horse. Both work (under professional hands) but will achieve slightly different outcomes.
Halter, lead rope, soft cotton rope (about 20 feet), 2 lunge lines, lunge whip, surcingle, bridle, saddle, saddle blanket, boots/wraps, grooming supplies. This is your most basic list for starting colts. Also for refinement: draw/side reins, running/standing martingale, lariat, poles/barrels/pylons,
Horses age on Howrse each day you log in to the game. Also, you can use aging points to age your horse by 2 months. If you want to use aging points, train your horse for the day and then put the horse to sleep either in the stall or the pasture. Then click the pyramid and it will tell you how many aging points you have. Use one and your horse will age 2 months and you can start your training over. You can age your horse as much as you want as long as you have the aging points.
It's not really bad for most levels of showing, but in the AA shows you are not allowed to have rubber bands anywhere.
Usually the horse should be lounged before riding. For a horse that gets a little 'bucky' when you first start to ride this is a safe solution. Unless you use lounging as a cool-down I don't see the benefit of exercising a tired horse.
The horse is eating the straw because it is either hungry or bored. A horse should have hay available at all times to prevent bad behaviours, ulcers, and colic. You can use a slow feed hay net to accomplish this. Another note is that straw is not necessarily the best bedding for horses it may benefit the horse to have it's bedding switched to pine shavings or even large particle sawdust (small particle sawdust is bad for them).