Hello,
for the past three years I have been running a blog that gives tips on dropshipping for beginners. Over time I have joined many affiliate programs of useful tools for dropshippers.
So I decided to create a coupon site that compiles all the partner offers that I get for my blog.
The coupon site is finished, I would like to know if you have any tips that would allow me to promote my coupon site effectively.
I look forward to hearing from you.
I think you can promote it on some dropshipping forums
A couple of suggestions:
1)SEO for organic traffic.
2)See where coupon sites are dropping their links, and if possible drop yours in the same/similar places - to get direct traffic and/or link juice.
3)Do various searches yourself, e.g. "[whatever service/product] promo code", to find out where other people are promoting coupon codes. Do enough of this type of research and you'll have a growing list of places where you can promote your codes.
Amy
Thank you for your help 
I had a review site, which is kinda similar to a coupon site... both promote services or websites, both are about specific sites or products.
This worked the best :
1. Ranking the specific pages for the product or site names, this converted like mad.
2. Ranking for KWs related to the general niche or category. So in your example "tools for dropshippers" etc.
3. Ranking for KWs related to the main topic, so coupons in your example, combined with the niche. So in your example "dropshipping tool COUPON" or "discount".
These 3 were absolutely the best.
4. Buying ads in google targeting the brands, for those where brandbidding was allowed. + words like coupon, discount, review etc...
5. Buying ads for KW related to the main topic "Coupons, discounts, reviews" + kw that is related to the niche "dropshipping"
6. FB ads targeting audiences that are related to the niche.
7. Buying reviews/posts on blogs that relate to the niche.
8. Buying email features, sponsored entries in newsletters that relate to the niche.
These worked well too.
For the starters, I would focus on building the organic traffic, the right KWs can bring insane conversions 