1. Unless new shares are won in advance, you can participate moderately. It is strongly recommended that you don't touch new shares on the day of listing. Don't call yourself a novice, and don't touch it if you are not familiar with it.
2. The stocks are all T+ 1, and they can't be sold until the next day, but the funds sold can continue to buy other stocks on the same day.
3. Of course, buying is an integral multiple of 100, and selling stocks is also an integral multiple of 100 in principle. But sometimes only part of the pending orders are sold, resulting in the remaining inventory is not an integer multiple. Of course, you can also sell the odd ones again.
When we first entered the market, everyone was full of confidence and wanted to make a big profit, but almost 100% would hit a nail and even suffer a big loss. Novices should not be busy buying and selling. The stock market opens every day, so it is not too late to spend some time learning some skills first. I can't help practicing if I don't have many hands. Don't gamble on luck. A master in the capital market will become a master only after he understands people's bad habits such as greed and ignorance. If you have no time to study or are not determined to become a master, then I suggest you quit the stock market and work with peace of mind. This market is a meat grinder, and fresh flesh and blood comes from novices who blindly enter the market.