New gardener from Pune, looking for guidance | New Gardeners | Hydroponics farming in India

Hi Everyone and GG

I would like to know if there is any files or basic information to start with.
I have 2 balconies around 300 sf One has enough sun light.

Should I start with waterproofing the floor and shade?
What type of soil?
What plants to start with?
What time is best to sow the seeds?

Its good to have a document to start with.

Thanks
Sarita