1. Unless you sign the new shares in advance, you can participate moderately. It is strongly recommended that you don't touch the new shares on the day of listing. Don't say that you are a novice and don't touch them if you are not familiar with them.
2. The stocks are all T+1, which can only be sold after the day after buying, but the sold funds can continue to buy other stocks on the same day.
3. Of course, buying is an integral multiple of 1, and selling stocks is also an integral multiple of 1 shares in principle. However, sometimes only a part of the pending orders are sold, resulting in the remaining stocks being not an integral multiple. Of course, you can also sell the odd ones again.
When you first enter the market, everyone is full of confidence and wants to make a big profit, but almost 1% of them will hit a nail or even suffer a big loss. Novices should not be busy buying and selling. The stock market is open every day. Take some time to learn some skills before speculating. You can't help but practice with a small number of hands. Don't gamble on luck. The master in the capital market only becomes a master after understanding 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 come from novices who blindly enter the market.