If your web host does not meet the MOHOBOOK system requirements, first ask them if they can adjust or enable any missing extensions, most hosts will oblige. If they are not able to do this, and you are ready to get rolling, we can highly recommend our own host: SiteGround
They offer high quality, affordable web hosting and support modern web applications like MOHOBOOK out of the box, no special configuration needed.
They also provide you with an intuitive control panel, which makes domain, email and database management a snap!
Visit SiteGround to learn more.