Firstly, make sure you have a clear goal for your campaign, whether it’s lead generation, sales, or brand awareness. You’ll need to decide what platforms you want to buy media on (Google Ads, Facebook, display networks, etc.) and understand your target audience well.
For creatives, yeah, you'll probably need to get a banner or ad designed, and if you’re sending people to a landing page, it should be optimized for conversions. If you’re not a designer, consider hiring someone to create eye-catching and effective visuals.
You’ll also need to prepare any tracking or analytics setup to measure how your campaign is performing (like using tracking links, pixels, or UTM parameters). Budget is another big factor, so figure out how much you're willing to spend and how you’ll allocate it across different platforms. Lastly, be prepared to test and tweak, media buying is all about experimentation and optimization, so make sure you’re ready to adjust based on what works best.