Low light plants are plants like Java Fern, bolbitis and any type of Anubias species. For lighting most flourescents will work or a fairly cheap LED light will as well. You shouldn't need CO2 for low light plants but it is a good idea to look into Seachem Flourish products like Excel or a different type of fertalizer because it will make them really happy. A good substrate would be another good thing to go ahead and get like, flourite or eco-complete because it will provide the plants some nutrients and give them a secure place for their roots. You should also check that any fish you want to put in with your plants are not going to eat or destroy them like my pleco likes to do lol.