How much is needed for advertising and what kind of advertising?

Question

Search Engine Optimization

Tell me, how much do you need to invest in the bulletin board, and what can be the output from it?
What is the best ad to use?

Answer 1

If you don’t have a specialization and you want to make a new Avito, it’s just a lot of hundreds of millions of rubles, if for billions to give away a significant market share, you are 15 years late, in general, I don’t remember 5 successful launches of new boards over the past years

Answer 2

Try a little, budget $100 for the source and try Yandex/Google/Facebook. See what happens with 100 dollars - you can already draw a conclusion - does it make sense.

Answer 3

About the exhaust is better to consider separately. You can focus first on one topic of ads, and then expand the headings, because in order to attract ads, you need to understand exactly that the user will stay and take the action. But if the site looks empty, then it will probably run away to large resources again.
It seems to me that targeting is quite a try, and something so massive, maybe YouTubers.