This is really your choice as both options are readily available to you. Disposable ones are more convenient, especially if you feel overwhelmed at first, they are also, however, very bad for the environment and will ultimately cost more. Reusable ones will save you money and save the environment those extra, non-biodegradable items in the dump. It is debatable which is more comfortable for the child in question - but be aware reusables need to be changed more often as they do not absorb as much as disposable. There are also pick-up services in most communities, often free-of-charge.