Heres how you can take care of each of these species
Tortoises are one of my most favorite animals in the world. They can be huge, small, fast, slow, shy, outgoing, or even majestic. They also have personalities too. They can recognize faces

Sulcata Tortoise
African spurred tortoises are the largest mainland species of tortoise in the world. They are also the third-largest tortoise in the world, only beaten by the Aldabra and Galapagos tortoise. They are an extremely aggressive species.

Aldabra Tortoise
The Aldabra giant tortoise is a massive tortoise. It is the second largest species of tortoise in the world although some say it might even be number one. They are more social tortoises, enjoying the company of other tortoises.

Red footed tortoise
A red-footed tortoise is a South American species of tortoise. They are one of the best (if not the best) tortoises you can have as a pet. In fact I own a baby red-footed tortoise that I have named Bob. They have a red foot giving them their name.
What I would rate each tortoise as a pet
Spurr-thighed
They are known to be extremely aggressive, knocking down furniture and burrowing through walls! They grow 20 times bigger than the hatchling. They have a lot of needs and live the desert so they need a desert diet and humidity.
Aldabra
Aldabra tortoises can get twice the size of a Spurr-thighed tortoise. They are way too big for an average back yard and are very strong. They are also more calm and lazy than a Spurr-thighed tortoise. One final downside is the price. The average price of a baby tortoise is 80-240 dollars, a baby Aldabra is $2800.
Red-footed
Red-footed tortoises are very easy to take care of. They require some maintenance and humidity but are easy to take care of. They are not a very aggressive tortoise but are still active and social. They grow to be over a foot, so they are a medium-sized tortoise.