a):- It would be really nice to "learn search engine marketing" techniques. First important question is whether you should purchase a new domain to increase search engine ranking or not?
The answer is no. There is a very important reason behind this. That is, the age of domain matters a lot as far as search engine rankings are concerned.
Even if you have the option of purchasing a new domain and redirecting to that your old one. It is advisable to go with the old domain.
You may experience a huge loss in "search engine optimization pricing" if you go for a new domain.
b):- Another question is whether the site should be optimized for search engines or the audience?
In this case the answer would be the targeted audience. One would always be thinking that keywords have the great importance on search engines.
Still, one should also know that it is the audience that types the keywords in search boxes of search engines.
In short, "search engine optimization cost" can be increased if the web site is optimized by keeping in mind the targeted audience. Because that is from where the web traffic can be increased
c):- Another important factor is the importance of keyword research. If you choose the keywords for the optimization on your own you'll be making a big mistake.
You can never analyse the correct keywords on your own. For this purpose you should always go for the keyword tools. There are a number of tools for keyword research available on the internet.
Some of them are Adwords Google, Keyword discovery.
