Never used rollers before, but with a little advise from a friend:- start at the top/crown of the head, lift hair to be curled into upright position and use roller to comb hair, when you reach the end of the length of hair keep using to roller to pull up and slowly wind round the hair. Was easy when i got the hang of it, and my daughters hair looked lovely and had a natural curl when finished.
However being a complete novice, i had bought a selection of sizes of the velcro rollers and found that on my daughters long hair any roller less than 4cm just tangled and was a nightmare to get out. (was even tempted to get scissors out at one point, so be warned small sizes for short hair only)
Otherwise great product, with a bit of practice i think i should be able to set a whole head of hair quickly, and may even be able to move onto proper rollers with a pin, as i think i would be able to get a tighter curl. But for now the velcro helps get the technique right.