If you read a lot of eBooks on your computer, you probably have at least one of these programs already installed.
Ọ bụrụ na ị gụọ ọtụtụ e-akwụkwọ na kọmputa gị, ị nwere ike ịnwe ma ọ dịkarịa ala otu n'ime mmemme ndị a arụnyere.