Just got back into cycling after years and years and loving it! I have a newly acquired bike which is originally from Decathlon, a Razorback mountain bike (I think) which is a few years old and in very good condition, thrilled to have it. Just a couple of questions on gears, when changing gears, is it best to stop peddling or just ease up a little, or does it not matter too much. When I had a bike years ago, peddling backwards made for a smoother gear change, I assume I don't need to do that now! Also, I'm a little confused as to what the control is on the left side of the handle bar, so I haven't used it really, in case I wreck something. On the right, are the gears, it's a twist action, Revoshift which goes from 1 to 6. But what is the left twist control for? It's very similar to the one on the right, but has no numbers, just a series of dashes ranging from L to H. Is this gears also? Sorry to sound ignorant, but if I don't ask I'll never know! Brilliant site this by the way. Thanx.