before last point to create a website

Hi friends,
? use wordpress.com as blog and ? think that ? must buy a host and create a website.

my situation, ? have blog free and ? m publishind the adv from visitors and now ? d like to make that, they can publish their own adv, become member and publish, ? d like to add this skill for at my new website ??

and so ? think this way, ? must buy a host, install wp, ? must buy a theme which includes membership and advs post types.

? dont know maybe ? can add the google map and then ? dont think to buy a theme because ? saw ? can make membership for a free theme and just ? will need to add google map, if this s possible too, then there wont be problem.

is that possible.

? am Turkish and a maths graduated and english s not native lang and arabic too. ? d like to creta a few website, ? want to work for my own website ??

? d like to see your advice, is that possible and the ways, ? am reading the docs todays for this…