Honestly if you’re going to do it at all seriously (and you can definitely get the bug for it), then go Concept2. The water rowers are ok to a point, but if you are interested in technique and building your strength you will soon find that you end up with water all over the floor and the feel you get from them is different too. There are some really good sites out there with training programmes, and if you look on actual rowing sites they will give you far better tips on technique than you would probably get here. Decent Rowing on FB is worth a look.
