If you still do not have a small computational force for speculative minining.
Or if you do not have many $$$ for initial investments.
Announcing projects and helping with these promotions is still the best way, the secret is to learn how to filter these projects.
After I had contact with mining, I learned a lot about it and since then I'm very selective and I do not waste time with false promises.
If you are willing to learn, you will probably be rewarded for it.