How to help a client with a website, tips at the initial stage?

How to help a client with a website, tips at the initial stage? More and more people now want to get not only a good resource, but also a detailed consultation. I have long understood for myself that in order to retain a customer, you need to help him a lot to retain him. Since there are a lot of people who want to make websites, but here's another question.

Factors from choosing a domain to the final value, that is, appearing in the search for the right words. They want to warn you about the popularity of the latter. The mistaken belief that people will immediately run to buy goods or services from you, in addition to finding a site, your work also matters. I always warn clients that the first places are based on the fact of sales. By the way, some disappear after such sayings, apparentl...