Welcome to ThePlantedTank!
Glad to have you here. This is the place to get a lot of info, data, and several other websites too on how on to get started.
First, I would like to ask what kind of tank are you making it out to be? Perhaps a low-maintenance tank or high? If you want something that is low-tech without the high budget, then you should go for the low-light plants; these are plants that need low light, and don't need a lot of attention at all or just little. For high-tech, you will need to be getting more equipment and etc so it would suit your needs in the long run.. Pressurized Co2/DIY, stronger lights, timers, substrate, and ferts. Which you would have to spend quite a large amount of money on, but unless you are very handy person, you can try DIY as well and save some $$$; So with all the gear with you, you will be rewarded with being able to grow a variety of plants that are fancier looking and such.
As for the cichlid tank, if you want to just go ahead and keep it running, it's already low-tech, so you could try adding in some low light plants like Java fern varieties; this plant would work wonders for your cichlid tank as they are hardy and bitter-tasting for your fish, so none of your cichlids would think about eating them. Also anubias or crypts.. well assuming your cichlids won't uproot them or eat them.
Anyway good luck!
20 gallon - Sulawesi Golden rabbit snails/Japanese Trapdoor snails/RCS/Marbled crayfish tank
55 gallon - Rainbowfish Dutch scape low-tech planted tank
250 gallon - Community Tiger Oscar/Red hook silver dollar/Silver dollars/PB Jack Dempsey/Clown loaches/Tinfoil barb/Roseline sharks/Bala shark Monster fish tank