It would depend on the type of ceiling that is being installed. Ask a more specific question, like "How do you install a suspended ceiling?", or "How do you install a drywall ceiling in a basement?"...something along those lines.
When installing a drop ceiling, first a metal framework is put into place, suspended from the true ceiling at the desired height. Then the panels are cut and inserted into the metal framework. There are several different methods for installation depending on what materials are being used and other factors, YouTube has many excellent video tutorials that show step by step instructions on exactly how to complete any type of drop ceiling.
You probably want to use a water resistant drywall, available anywhere drywall is sold.
Drywall
You use standard 1/2 inch drywall .
cement board
If it is mould all the bad has to go
Basement Waterproofing averts water from entering into the basement. It is imperative that you waterproof your basement or else it could end in a failing drywall or other structural damage.
Yes, you can.
You are supposed to fur it out first. - That means a thin wood frame, usually 1x4 on the concrete FIRST. - It is not customary to apply drywall directly to a concrete basement wall.
You put post protectors in the drywall, and don't do it at the end of the drywall.
You want to put the tub in first.
Might be an idea to tell us the SIZE of the basement to start with.
Well first you make a basement and then you put stairs in it where ever there is a space for example if you where trying to put stairs in your house to the basement you would have to have a huge amount of space and delete 6 squares of floor and but 2 stairs then in the basement you put the stairs where 6th squares are then you have basement stairs.
In an event of a basement flood, one should notify their agency if the damage is covered. One should also remove and replace damaged drywall, insulation, mechanical fixtures, and electrical material.