Re: Things i can do at home?
My free advice: Learn the basics of rolling/falling, and then find a place to practice. Rolling backwards from standing and coming back to standing is GREAT conditioning, and builds skill that will be useful in training. Once you've learned forward rolls, work on those. A carpet, a lawn, a mat if you have one - all will do; but hard surfaces are very direct teachers, their feedback is clear and unmistakeable - make sure you're ready for it when you go there. Get Ellis Amdur's DVD "Ukemi from the ground up" and watch it several times - and use good awareness and judgement if you have to face a situation where your dojo teaches ukemi differently than Amdur Sensei does. (try their style and don't make a big deal out of it until you have some experience of your own.)