Wow, my first marketing campaign was so long ago, I don't even remember it.
And, with today's technology, some of the things I did do may not even apply. I would suggest an "indirect" but effective marketing strategy, and that is getting "Advocates", and let them help you get clients. This was very effective for me --
Advocates are people who will promote your business on your behalf. Now of course, you have to tell them about your business, describe for them who is your ideal client, give them the okay to make initial contacts for you. You'd be surprises who they know -- and who would be willing to help you -- if you just ask. Let them break the ice for you -- and before you know it, you will have contact with potential new clients.
I hope this helps.
Yours,