hi! as a graphic industry professional ( 25+ years in the field) i can advice you to use libreoffice / msword to type the text and when it's finished to look for a proffessional / company to make the prepress work using indesign / xpress / scribus ( in this order). if there is no graphics / tables / schema in the book this is a pretty trivial task ... making styles for the different body parts ( chapters, titles, body, quotes, dialogs underlines texts) ... if the first etap ( writing body ) do not bother about formating the text .. just lay down the text in bulk... and just look around for somebosy to do the initial formatink when the text is ready ... in the second period ask them to send you a pdf draft of the formated book( pdf is the defaco standard in the industry ) and you will send corrections as notes in the pdf ( a this point void .doc format ) ... you can submit some changes in doc but only as parts just to replace some texts ...
after a several rounds of corrections/ drat your book will be ready for printing / online publishing ( even amazon kindle tools can convert well generated pdf to .mobi or pub)..
good luck
P.S: if you master Html/css and you are aware of @print media selector you can produce a print ready pdf out of well writen html/css all with page sizes/ margins etc