I agree with Seffie. Something like a Juwel rio 120 or180 is ideal. The reason being is that a larger tank has more water volume which means changes in the water chemistry occur at a slower rate and is therefore more forgiving to the newbie.
Other equipment you will need include a refractometer for measuring the salt content in the water and 3 test kits. One for ammonia, one for nitrites and one for nitrates. You can add to these test kits later to include a phosphate test kit and calcium too, although these aren't important unless you wish to keep corals.
As seffie has said, read through the journals and make notes of things. See how the process of setting up a tank is done and evolves. If there are things you don't understand, make a note of them and post back here.