I used to do weight training and I used to be fit. Do you like strength training?
I'm planning on starting in the next few months, but right now I'm working on cardio.
I actually like doing HIT training now. It's a high intensity training . The exercises are short, infrequent and intense. Makes your heart rate go up and  you burn more calories
Can you tell me more about that kind of training?  Does it require any special equipment?
I do it at the gym so they have all the equipment but I'm pretty sure you can do it at home too with no equipment. 
Is it good for cardio and weight lifting?
It's kind of both! For example you do 40 seconds of running in one place and then 10 seconds rest. Then you pick up dumbbells and do bicep curls for 40 seconds and then 10 seconds rest and so on.  
OH I understand now - kind of like circuit training?