Buy a copy of the writer handbook and spend hours in front of your pc! be arare though that these individuals are narrow minded, unadventurous biggots wsho couldn't see a good idea if it jumped up and slapped them in the chops!! I went down the self publishing route in the end but that is expensive. Then hit the streets visiting bookshops, even got a slot on local radio. I was a salesman for a living once, and still found it tough! Bear in mind you do have to be able to write as well!! you may think you can, but can you really. Try dipping your toe in the water by writing for magazines first.
It's ultra competitive 'cos it seems an easy way to fund your travels, it isn't. 8 months on from publication I have just broken even. I was lucky though as the organiser of the plymouth to dakar bought 250 copies!
Check out www.plymouth-dakar.com
for details on my book and good luck
land rover 101 ambie/camper
landcruiser 60 series
ford escort and 1968 morris minor traveller!
1990 Landcruiser H60. Full rebuild completed 2014
2012 Hilux, mountain top and bedrug with GG AT2s