My wizard's spellbook was destroyed! How can I acquire/create a new one?
A spellbook costs 50 gp and should be available in most towns for purchase (depending on setting). You can then copy all of the spells into it that you have prepared, using the procedure on page 114 of the PHB.
This item could be crafted according to the mundane crafting rules in the PHB (p. 187).
I believe the general rule is you can use any other book. From the 5e book on p.114, note the absence of qualifiers on "another book":
Replacing the Book. You can copy a spell from your own spellbook into another book — for example, if you want to make a backup copy of your spellbook. This is just like copying a new spell into your spellbook, but faster and easier, since you understand your own notation and already know how to cast the spell. You need spend only 1 hour and 10 gp for each level of the copied spell.
If you lose your spellbook, you can use the same procedure to transcribe the spells that you have prepared into a new spellbook. Filling out the remainder of your spellbook requires you to find new spells to do so, as normal. For this reason, many wizards keep backup spellbooks in a safe place.
You cannot remake the book, any empty book can serve you as a spellbook, but if you lost all your original spells, you have to start again from scratch.
You can find most of those rulings in the Wizard class section of the handbook however, the best solution is usually to discuss it with your DM