Big Pharma Wiki

The tutorials are an excellent way of learning the basic game mechanics.

Catalysts are a difficult concept to get so it is well worth paying good attention to that one and repeating it.

After that, the first scenario "Bottom line" is a nice low pressure sandbox for testing out ideas. Be aware that the scenario will not play out the same way each time.

It is likely that you will be able to make lower value drugs early on that you can later modify to have higher order effects - and this will take more room. Plan for expansion but take the profit now... and if a simple drug is showing a good profit, make it on a new production line.