I am looking for start up my on-line business in traveling booking for hotels and rents a car . so i am looking for website like www.booking.com , also i am thinking if this website so big for me to manage it i have other idea like : http://www.shadona.com/ ( this website have deals with booking.com and but an icon to make the customer book from the same site with better search engine .

i need a good advise to start up strongly .

Thanks