What kind of brand ist it and has it in some way to do with Crypto , or is it a new Coin Project ?

If your brand is something like a service i guess the best thing is when you posting it here Bitcoin Forum > Economy > Marketplace > Service Announcements
All other things that you would like to offer should be here Bitcoin Forum > Economy > Marketplace
For a new Coin Project you should be posting it here Bitcoin Forum > Alternate cryptocurrencies > Announcements (Altcoins)

Keep in mind that if you pay for a promotion it should be done in Bitcoin here on the forum and you should be also read the rules
Unofficial list of (official) Bitcointalk.org rules, guidelines, FAQ