What chemicals and what amount is used to start up a 3300 gallon 14'x42" summer wave pool
There is no general answer for this type of question.  The specifics and quantity of chemicals greatly depend upon:


your local water conditions:  water source, minerals, age of pipe
pool liner type
filter type
pump type
plumbing type
climate:  rainfall, humidity, salty air, etc.
usage patterns
and other possible variations like overhanging vegetation, runoff,
local critters, etc., etc.


The best advice is found at your local friendly neighborhood pool chemical supply store.  Take care to select a good one.  Maybe you have coworkers or friends with a pool:  seek out their advice about the best pool shop in town.

Take a sample of your pool water in a clean container; also take your pool's details above.  At least some stores do the analysis for free and provide you with a custom list of chemicals, quantities, and frequency of application for proper treatment.

Of course the business wants to sell you as much product as possible.  If you are not experienced managing a pool's chemical balance, follow their advice closely until you get a feel for how your pool behaves&mdash;which could take two or three months of daily sampling and maintenance.